End-tab vs. top-tab — what’s the difference?

End-tab folders show the tab on the long side and are used on open-shelf systems; top-tab folders show the tab along the top edge and are designed for drawer filing.

When should I choose classification folders?

Choose classification folders when you need built-in dividers and 2-prong fasteners to separate sections within one file—ideal for medical charts, legal matters, and case files.

Letter or legal size — how do I pick?

Letter (8.5\" × 11\") fits standard documents; legal (8.5\" × 14\") fits longer forms. Match the folder to both your documents and storage equipment.

What tab and material options are available?

Tabs include full-cut, 1/2-cut, or 1/3-cut (assorted positions). Materials range from 11-pt to 18-pt manila, with optional reinforced (2-ply) tabs for added durability.

Can I add fasteners, pockets, or expansion?

Yes—add 2\" bonded fasteners (various positions), pockets/jackets, and expansion gussets (e.g., 3/4\" to 2\"+). Check each product’s options for capacity and placement.

Do you offer volume pricing or custom printing?

We offer bulk price breaks and custom printing (logos, lines, colors). Call (800) 810-3453 for a quote.

What safety labels should I look for on school and early-childhood items?

For children’s products, look for CPSIA compliance and a Children’s Product Certificate (CPC). Art materials should be labeled to ASTM D-4236; many also carry ACMI’s “AP” (non-toxic) or “CL” seals. These help confirm proper cautionary labeling and third-party testing where required.

How do I pick classroom furniture across grade levels?

Favor adjustable-height desks/tables and seating tested to ANSI/BIFMA X6.1 for educational use. Check manufacturer grade/height charts; adjustable ranges let you cover multiple grades with one model and simplify purchasing and spares.

What’s the best way to organize supplies and centers?

Use latching, stackable bins (clear for quick ID; colors for zones/subjects). Add label holders on bins and shelves, and keep a posted color key so students can reset the room independently.

How do I choose learning games and manipulatives by age?

Match to the stated age/grade band and learning goals (fine motor, numeracy, literacy). For early childhood, prioritize oversized pieces, wipe-clean surfaces, and non-toxic finishes.

What should I consider in a charging/tech cart?

Count devices and case sizes; verify slot width/height, cable management, ventilation, and locking doors. If devices support fast-charge (e.g., USB-C PD), confirm the cart’s power specs and total charging wattage.

Do you support school POs, bulk pricing, or custom printing?

Yes—volume pricing and custom imprinting (school name, mascot, subject headers) are available. Call (800) 810-3453.

Sheet vs. roll labels — what’s the difference?

Sheet labels (letter-size) run through laser/inkjet printers; roll labels feed through thermal or dedicated label printers.

Permanent or removable adhesive?

Permanent adhesives are best for long-term filing; removable adhesives peel away cleanly from most surfaces for temporary notes or re-use.

Will these labels work in my printer?

Check each item’s spec for “laser,” “inkjet,” or “thermal.” Avoid running inkjet-only sheets through a laser printer.

How do I match the label size to folder tabs or binder spines?

Measure the printable area of your tab or spine and match to the label’s width/height. If unsure, choose a slightly smaller label for clean alignment.

Can I get preprinted sequences or color bars?

Yes—choose preprinted sets (A-Z, 0-9, months) or request custom colors/text to match your filing system.

Do you have templates?

We provide size specifications and many customers use common label templates. If you need help aligning, call (800) 810-3453.

What do 5-, 8-, 10-, or 12-tab sets mean?

That’s the number of tabs per set. More tabs provide finer organization; fewer tabs give larger, easier-to-read tabs.

Paper vs. poly — which should I choose?

Paper (often with Mylar-reinforced tabs) is economical and easy to write on; poly resists tears and moisture for heavy use and frequent handling.

Are the tabs printable?

Some tabs are hand-write only; others are laser/inkjet printable. Check each product for “printable” support and printer compatibility.

Will they fit my binder?

Choose letter (8.5\" × 11\") for most 3-ring binders or legal (8.5\" × 14\") for longer documents. Many options are pre-punched for standard rings.

Can I mix preprinted and blank tabs?

Yes—use a preprinted core set and add blank or custom tabs for sections unique to your workflow.

Do you make custom tab sets?

Yes—tab titles, colors, and sheet stock can be customized. Call (800) 810-3453.

Which paper weight and brightness should I choose?

Use 20 lb / 75 gsm, 92-brightness for everyday printing; step up to 24–28 lb and 96+ brightness for presentations and double-sided color. If you print heavy coverage or duplex often, the thicker stock helps reduce show-through. Always confirm your printer’s supported paper weights.

Round-ring vs. D-ring binders — what’s the difference?

D-ring binders hold more paper at the same spine width and keep pages lying flatter, which reduces edge wear. Round-rings are economical for smaller sets. Pick capacity based on sheet count and how often you turn pages.

What does “sheet capacity” mean on staplers and hole punches?

It’s measured using standard 20 lb copy paper. If you use heavier paper, expect a lower effective capacity. For shared spaces, choose high-capacity staplers/punches to avoid jams and downtime.

Will labels, envelopes, and mailers work with my printer?

Check each item’s spec for “laser,” “inkjet,” or “thermal.” Laser-safe adhesives resist heat; some inkjet-only sheets shouldn’t go through laser fusers. Use your printer’s label or heavy-stock setting for best feed and adhesion.

How do I choose mailers and shipping boxes?

Bubble or poly mailers are great for lightweight, non-fragile contents; corrugated boxes protect heavier or delicate items. Match interior dimensions to your contents, add cushioning if needed, and choose stronger board as weight increases.

Do you offer eco-conscious options or bulk pricing?

Many items are available with recycled content or reduced-waste packaging, and we offer volume price breaks. Call (800) 810-3453 for large-order help or product guidance.

What ball sizes should I choose for different ages?

Use age-appropriate sizes for safer, more successful play. Common guidelines include: Basketball—Size 5 (27.5\") youth, Size 6 (28.5\") intermediate, Size 7 (29.5\") official. Soccer—Size 3 up to ~8 years, Size 4 ~8–12, Size 5 ~12+. Volleyball—Regulation balls for teens/adults; lighter training balls for younger players. Always check the product page for the manufacturer’s recommended age range.

Indoor vs. outdoor — which materials hold up best?

Composite or rubber-covered balls and poly cones hold up well outdoors; leather and finer composites are best indoors. For markers, look for UV-stable plastics; for goals, choose powder-coated frames and weather-resistant nets for outdoor use.

How many pinnies, cones, or markers do I need?

For classes and drills, packs of 12 are a good start; 24–36 pieces cover full-class activities and multiple stations. Choose mixed colors for quick team splits and field zones.

Tips for storage and care?

Use ventilated ball bags or carts, wipe down gear after outdoor use, and avoid prolonged heat/sun in storage. Inflate balls to the manufacturer’s recommendations and check pressure periodically to extend lifespan.

Are items latex-free and school-safe?

Many products are offered in latex-free or phthalate-free materials. Look for those callouts on the product page. Children’s items may include compliance statements on labeling; review those details if you’re purchasing for younger ages.

Do you support bulk orders or custom printing (team names)?

Yes—volume pricing and custom imprinting are available on many items. Call (800) 810-3453 for a quote or assistance with large sets.

What is the difference between FireKing vertical and lateral file cabinets?

Vertical file cabinets are deeper and narrower, making them a good fit for offices with limited wall space. Lateral file cabinets are wider and allow side-to-side filing, which can make document access easier and provide more filing width per drawer.

What can I store in a FireKing fireproof file cabinet?

FireKing cabinets are commonly used to store paper files, legal documents, medical records, financial records, contracts, personnel files, and other important business paperwork that needs organized fire-resistant storage.

Are FireKing cabinets only for paper records?

Many FireKing products are primarily designed for paper document protection, but some models may also be used for storing valuables or other office materials. Always review the specific product details and manufacturer recommendations to confirm the intended storage use for each model.

How do I choose between a FireKing safe, file cabinet, or storage cabinet?

Choose a fireproof file cabinet if you need organized drawer-based filing for records. Choose a safe if you need compact secure storage for documents, cash, or valuables. Choose a fireproof storage cabinet if you need shelf storage for binders, boxed records, supplies, or larger office materials.

What sizes are available in FireKing cabinets?

FireKing products are available in several sizes and configurations, including vertical file cabinets, lateral file cabinets, safes, card file cabinets, and storage cabinets. Available sizes, number of drawers, and overall dimensions vary by model.

Are FireKing cabinets used in offices, medical facilities, and government records storage?

Yes. FireKing cabinets are commonly used in offices, healthcare facilities, legal environments, schools, and government agencies where important records need secure, organized, fire-resistant storage.

Can I buy FireKing cabinets in bulk or get help choosing the right model?

Yes. We can help with product selection, bulk orders, and larger project needs. If you need assistance comparing FireKing file cabinets, safes, or storage cabinets, call (800) 810-3453.

Do you offer free shipping?

Yes—free ground shipping on orders of $99+.

What are your shipping rates?

Labels-only orders under $40 ship for $6.95. All other orders ship for a flat $14.95.

Do you offer bulk discounts?

Yes—volume pricing is available on many items. Contact us for a quote or large-order assistance.

Do you accept purchase orders (POs)?

Yes—we accept POs from schools and government agencies. If you need terms or documentation, please reach out.

Where can I read your full Shipping and Return policies?

See our Shipping Policy and Return Policy pages for complete details.

How can I contact you?

Call (800) 810-3453 or use our Contact Us form.

EPDM O-Rings

EPDM

EPDM O-rings are round sealing components used by maintenance, plumbing, pump, and water-system teams to replace or specify seals in compatible assemblies and connection points. The products represented in this category are black EPDM O-rings with defined inside and outside diameters; several list a 70 durometer hardness to help buyers match existing fit and hardness requirements.

Add to Wish List
Global O-Ring & Seal

EPDM 228 O-Ring, 2-1/4 in. ID x 2-1/2 in. OD, Black

Retail:

Our Price:
$0.26

(You Save: )

This black EPDM 228 O-ring is a round sealing component for maintenance and plumbing professionals who need to replace or specify an O-ring by its inside and outside diameter. It helps form a seal in...

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Add to Wish List
Global O-Ring & Seal

EPDM O-Ring, 1-3/4 in. ID x 2-1/8 in. OD, 70 Durometer, Black

Retail:

Our Price:
$0.44

(You Save: )

This black EPDM O-ring is a round sealing component for maintenance and plumbing professionals who need to replace or specify an O-ring by its inside and outside diameters. Its 70 durometer rating...

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Add to Wish List
Global O-Ring & Seal

EPDM O-Ring, 2-3/8 in. ID x 2-3/4 in. OD, Black, 70 Durometer

Retail:

Our Price:
$0.59

(You Save: )

This black EPDM O-ring is a round sealing component for maintenance professionals and plumbing system users who need to replace or specify an O-ring by inside diameter, outside diameter, and hardness...

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Add to Wish List
Global O-Ring & Seal

EPDM O-Ring, 3/16 in. ID x 5/16 in. OD, Black

Retail:

Our Price:
$2.41

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This black EPDM O-ring is a round sealing component for plumbing, pump, and water-system applications. It helps maintenance and repair teams create a fitted seal at compatible connection points.The...

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Add to Wish List
Global O-Ring & Seal

EPDM O-Ring, 4-1/8 in. ID x 4-1/2 in. OD, Black

Retail:

Our Price:
$0.89

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This black EPDM O-ring is a round sealing component for maintenance and plumbing professionals who need a precisely sized replacement seal for compatible assemblies. Its 4-1/8-inch inside diameter...

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Helpful Buying Guide

EPDM O-Ring Buying Guide

Selecting an EPDM O-ring begins with matching the replacement or assembly requirement. Compare the inside diameter and outside diameter first, then confirm the stated hardness, round profile, color, and any listed minimum order quantity.

Visual Guide

Popular examples in this category

EPDM O-Ring, 2-3/8 in. ID x 2-3/4 in. OD, Black, 70 DurometerWBB1370645

EPDM 228 O-Ring, 2-1/4 in. ID x 2-1/2 in. OD, BlackWBB1371159

EPDM O-Ring, 1-3/4 in. ID x 2-1/8 in. OD, 70 Durometer, BlackWBB1370711

EPDM O-Ring, 3/16 in. ID x 5/16 in. OD, BlackWBB1370775

Use Cases

Replacement sealing for compatible assemblies

These round EPDM O-rings are intended to help form a seal in compatible plumbing, pump, water-system, and maintenance assemblies.

How to Choose

Match the required dimensions

Use the specified inside diameter and outside diameter to compare the O-ring with the required fit dimensions, groove, or sealing location.

Applications

Plumbing, pumps, and water systems

The represented products are suited to compatible connection points and assemblies used by plumbing, pump, water-system, and maintenance teams.

Additional Information

Check hardness and quantity details

Several options list 70 durometer hardness. Review the product listing for stated order minimums, including examples of 10 or 22 units.

3/16 in.Smallest listed inside diameter

Paired with a 5/16 in. outside diameter.

4-1/8 in.Largest listed inside diameter

Paired with a 4-1/2 in. outside diameter.

70Listed durometer

Specified on multiple represented O-rings.

10 or 22Stated minimum quantities

Listed on selected products.

Comparison Guide

Compare the represented EPDM O-ring options

Use the dimensions and listed purchasing details to narrow the choices for a compatible replacement or assembly specification.

Size option	Listed characteristics	Purchase detail
3/16 in. ID x 5/16 in. OD	Black EPDM; 70 durometer	No minimum stated in the summary
1-3/4 in. ID x 2-1/8 in. OD	Black EPDM; 70 durometer	Effective minimum: 22
4-1/8 in. ID x 4-1/2 in. OD	Black EPDM; 70 durometer; round profile	Minimum order: 10

Planning Guide

Plan the right fit before choosing

Start With Fit

Compare inside and outside diameter

The listed O-rings range from a 3/16 in. ID x 5/16 in. OD option to a 4-1/8 in. ID x 4-1/2 in. OD option. Select only a size that matches the dimensions required by the compatible assembly.

Compare both ID and OD; do not rely on one measurement alone.
Examples include 1-3/4 in. ID x 2-1/8 in. OD, 2-1/4 in. ID x 2-1/2 in. OD, and 2-3/8 in. ID x 2-3/4 in. OD.
Confirm the required groove or connection-point fit before selecting.

Confirm Material and Hardness

Match the EPDM and durometer requirement

All represented options use EPDM and have a black finish. Multiple listed products specify 70 durometer hardness, helping purchasers match an existing hardness requirement.

Choose EPDM when the compatible application requires this elastomer material.
Use the stated 70 durometer rating where that hardness is required.
Some represented EPDM O-rings list resistance to ozone, sunlight, and weathering for suitable sealing applications.

Plan the Purchase

Review order quantities before ordering

Some products have an effective minimum of 22 or a minimum order of 10. Include these stated minimums in maintenance and replacement planning.

Check the listing for any minimum order quantity.
Plan quantities around the number of seals needed for the maintenance task.
Keep the specified size and hardness together when documenting a replacement requirement.

FAQ

Common questions before buying

What measurements should I compare for an EPDM O-ring?

Compare the inside diameter and outside diameter with the dimensions required by the compatible assembly.

What hardness is listed for these O-rings?

Multiple represented products list a 70 durometer hardness.

What color are the represented EPDM O-rings?

The represented O-rings have a black finish.

Are minimum order quantities listed?

Some listings state a minimum order of 10 or an effective minimum of 22.

Helpful Buying Guide

EPDM O-Ring Buying Guide

Visual Guide

Popular examples in this category

EPDM O-Ring, 2-3/8 in. ID x 2-3/4 in. OD, Black, 70 DurometerWBB1370645

EPDM 228 O-Ring, 2-1/4 in. ID x 2-1/2 in. OD, BlackWBB1371159

EPDM O-Ring, 1-3/4 in. ID x 2-1/8 in. OD, 70 Durometer, BlackWBB1370711

EPDM O-Ring, 3/16 in. ID x 5/16 in. OD, BlackWBB1370775

Use Cases

Replacement sealing for compatible assemblies

These round EPDM O-rings are intended to help form a seal in compatible plumbing, pump, water-system, and maintenance assemblies.

How to Choose

Match the required dimensions

Use the specified inside diameter and outside diameter to compare the O-ring with the required fit dimensions, groove, or sealing location.

Applications

Plumbing, pumps, and water systems

The represented products are suited to compatible connection points and assemblies used by plumbing, pump, water-system, and maintenance teams.

Additional Information

Check hardness and quantity details

Several options list 70 durometer hardness. Review the product listing for stated order minimums, including examples of 10 or 22 units.

3/16 in.Smallest listed inside diameter

Paired with a 5/16 in. outside diameter.

4-1/8 in.Largest listed inside diameter

Paired with a 4-1/2 in. outside diameter.

70Listed durometer

Specified on multiple represented O-rings.

10 or 22Stated minimum quantities

Listed on selected products.

Comparison Guide

Compare the represented EPDM O-ring options

Use the dimensions and listed purchasing details to narrow the choices for a compatible replacement or assembly specification.

Size option	Listed characteristics	Purchase detail
3/16 in. ID x 5/16 in. OD	Black EPDM; 70 durometer	No minimum stated in the summary
1-3/4 in. ID x 2-1/8 in. OD	Black EPDM; 70 durometer	Effective minimum: 22
4-1/8 in. ID x 4-1/2 in. OD	Black EPDM; 70 durometer; round profile	Minimum order: 10

Planning Guide

Plan the right fit before choosing

Start With Fit

Compare inside and outside diameter

The listed O-rings range from a 3/16 in. ID x 5/16 in. OD option to a 4-1/8 in. ID x 4-1/2 in. OD option. Select only a size that matches the dimensions required by the compatible assembly.

Compare both ID and OD; do not rely on one measurement alone.
Examples include 1-3/4 in. ID x 2-1/8 in. OD, 2-1/4 in. ID x 2-1/2 in. OD, and 2-3/8 in. ID x 2-3/4 in. OD.
Confirm the required groove or connection-point fit before selecting.

Confirm Material and Hardness

Match the EPDM and durometer requirement

All represented options use EPDM and have a black finish. Multiple listed products specify 70 durometer hardness, helping purchasers match an existing hardness requirement.

Choose EPDM when the compatible application requires this elastomer material.
Use the stated 70 durometer rating where that hardness is required.
Some represented EPDM O-rings list resistance to ozone, sunlight, and weathering for suitable sealing applications.

Plan the Purchase

Review order quantities before ordering

Some products have an effective minimum of 22 or a minimum order of 10. Include these stated minimums in maintenance and replacement planning.

Check the listing for any minimum order quantity.
Plan quantities around the number of seals needed for the maintenance task.
Keep the specified size and hardness together when documenting a replacement requirement.

FAQ

Common questions before buying

What measurements should I compare for an EPDM O-ring?

Compare the inside diameter and outside diameter with the dimensions required by the compatible assembly.

What hardness is listed for these O-rings?

Multiple represented products list a 70 durometer hardness.

What color are the represented EPDM O-rings?

The represented O-rings have a black finish.

Are minimum order quantities listed?

Some listings state a minimum order of 10 or an effective minimum of 22.

EPDM 228 O-Ring, 2-1/4 in. ID x 2-1/2 in. OD, Black

EPDM O-Ring, 1-3/4 in. ID x 2-1/8 in. OD, 70 Durometer, Black

EPDM O-Ring, 2-3/8 in. ID x 2-3/4 in. OD, Black, 70 Durometer

EPDM O-Ring, 3/16 in. ID x 5/16 in. OD, Black

EPDM O-Ring, 4-1/8 in. ID x 4-1/2 in. OD, Black

EPDM O-Ring Buying Guide

Popular examples in this category

Replacement sealing for compatible assemblies

Match the required dimensions

Plumbing, pumps, and water systems

Check hardness and quantity details

Compare the represented EPDM O-ring options

Plan the right fit before choosing

Compare inside and outside diameter

Match the EPDM and durometer requirement

Review order quantities before ordering

Common questions before buying

EPDM O-Ring Buying Guide

Popular examples in this category

Replacement sealing for compatible assemblies

Match the required dimensions

Plumbing, pumps, and water systems

Check hardness and quantity details

Compare the represented EPDM O-ring options

Plan the right fit before choosing

Compare inside and outside diameter

Match the EPDM and durometer requirement

Review order quantities before ordering

Common questions before buying

Choosing the right file folders

Folder FAQs

Outfitting classrooms that work all day

Education FAQs

Choosing the right labels

Labels FAQs

Choosing the right tab dividers

Tab Dividers FAQs

Choosing the right office supplies

Office Supplies FAQs

Choosing the right sports & PE equipment

Sports & Athletics FAQs

Choosing the right FireKing fireproof cabinet

FireKing FAQs

Shipping & Policies