Flange Gaskets

Flange gaskets create a sealing interface between compatible pipe flanges in commercial plumbing, piping maintenance, and water-system work. This category includes ring gaskets for raised-face flanges and full-face gaskets with bolt holes for flat flanges, in options sized for 1/2 in. through 6 in. Class 150 pipe connections.

Product Display:
Helpful Buying Guide

Choose a flange gasket for the connection you are sealing

Start with the flange-face style, then match the gasket to the stated pipe size, Class 150 application, material needs, thickness, and any minimum order quantity. The available products include ring and full-face profiles in several gasket materials for commercial plumbing and piping work.

Visual Guide

Popular examples in this category

Aramid Ring Flange Gasket for 1-1/4 in. Pipe, Class 150Aramid Ring Flange Gasket for 1-1/4 in. Pipe, Class 150WBB2268335Full-Face Buna-N Flange Gasket for 3/4-Inch Pipe, Class 150Full-Face Buna-N Flange Gasket for 3/4-Inch Pipe, Class 150WBB2268050Silicone Ring Flange Gasket for 1-1/2 in. Pipe, Class 150Silicone Ring Flange Gasket for 1-1/2 in. Pipe, Class 150WBB2267950Class 150 Full-Face Buna-N Gasket for 3 in. PipeClass 150 Full-Face Buna-N Gasket for 3 in. PipeWBB2266511
Use Cases

Seal compatible flanged pipe connections

These gaskets are used by plumbing, piping, and maintenance professionals to create a sealing interface between mating flanges in commercial plumbing, piping maintenance, and water-system applications.

How to Choose

Match profile, size, class, and thickness

Select a ring gasket for a raised-face flange or a full-face gasket for a flat flange. Confirm the stated pipe size, Class 150 compatibility, required thickness, material, and minimum order before purchasing.

Applications

Support plumbing and piping assemblies

Available options support specified Class 150 connections from 1/2 in. to 6 in. pipe. Full-face styles include bolt holes to help with placement and alignment during installation.

Additional Info

Compare material options carefully

Aramid and Buna-N options resist oil, water, and mild chemicals. Silicone is suited to a broad temperature range and resists water, mild chemicals, and animal and vegetable oils. Fluoroelastomer resists oil, chemicals, and heat, while compressible PTFE provides a compressible gasket option.

1/2–6 in.Pipe sizes represented

Options are available for stated pipe sizes from 1/2 in. through 6 in.

2Gasket profiles

Choose ring profiles for raised-face flanges or full-face profiles for flat flanges.

1/16 or 1/8 in.Thicknesses represented

Match the gasket thickness stated for the compatible flange assembly.

Class 150Flange application

The represented products are identified for compatible Class 150 applications.

Comparison Guide

Ring vs. full-face flange gaskets

Use the flange-face design and the product’s stated fit to narrow the selection.

Selection factorRing gasketFull-face gasket
Compatible flange faceRaised-face or raised-surface flangesFlat pipe flanges
Profile and installationFocused sealing interface; does not require mechanical mountingCovers the flange face and includes bolt holes for mounting, placement, and alignment
Represented material optionsAramid and Buna-N, silicone, and fluoroelastomerBuna-N, fluoroelastomer, and compressible PTFE
Planning Guide

Plan the right fit before choosing

Start with flange profile

Choose ring or full-face construction

The sealing-surface style is the first selection point. Ring gaskets are designed for raised-face or raised-surface flanges and do not require mechanical mounting. Full-face gaskets cover the flange face and include bolt holes for mounting, placement, and alignment on flat pipe flanges.

  • Use ring profiles on compatible raised-face flange connections.
  • Use full-face profiles on compatible flat pipe flanges.
  • Use the bolt-hole pattern on full-face styles to help position the gasket during installation.
Match the connection

Confirm pipe size, Class 150 designation, and thickness

Available gaskets are identified for compatible Class 150 pipe connections. Match the stated pipe size and select the thickness specified for the assembly.

  • Available pipe sizes range from 1/2 in. through 6 in.
  • All represented options are identified for Class 150 applications.
  • Available thicknesses include 1/16 in. and 1/8 in.
Select the gasket material

Compare resistance needs with the material described

Material selection depends on the conditions stated for the application. Several options are available across ring and full-face profiles, but profile, pipe size, and thickness vary by product.

  • Aramid and Buna-N constructions provide resistance to oil, water, and mild chemicals.
  • Silicone provides resistance to water, mild chemicals, and animal and vegetable oils, and is suited to a broad temperature range.
  • Fluoroelastomer provides resistance to oil, chemicals, and heat.
  • Compressible PTFE is available as a full-face option for 1/2 in. pipe.
FAQ

Common questions before buying

What is the difference between ring and full-face flange gaskets?

Ring gaskets are designed for raised-face or raised-surface flanges. Full-face gaskets cover flat flange faces and include bolt holes.

What pipe sizes are represented in this category?

The available summaries include gaskets for 1/2 in., 3/4 in., 1 in., 1-1/4 in., 1-1/2 in., 2 in., 3 in., 4 in., and 6 in. pipe.

What materials are available?

Represented materials include aramid and Buna-N, Buna-N rubber, silicone, fluoroelastomer, and compressible PTFE.

Are all of these gaskets for the same flange class?

The represented products are identified for compatible Class 150 flange applications.

Helpful Buying Guide

Choose a flange gasket for the connection you are sealing

Start with the flange-face style, then match the gasket to the stated pipe size, Class 150 application, material needs, thickness, and any minimum order quantity. The available products include ring and full-face profiles in several gasket materials for commercial plumbing and piping work.

Visual Guide

Popular examples in this category

Aramid Ring Flange Gasket for 1-1/4 in. Pipe, Class 150Aramid Ring Flange Gasket for 1-1/4 in. Pipe, Class 150WBB2268335Full-Face Buna-N Flange Gasket for 3/4-Inch Pipe, Class 150Full-Face Buna-N Flange Gasket for 3/4-Inch Pipe, Class 150WBB2268050Silicone Ring Flange Gasket for 1-1/2 in. Pipe, Class 150Silicone Ring Flange Gasket for 1-1/2 in. Pipe, Class 150WBB2267950Class 150 Full-Face Buna-N Gasket for 3 in. PipeClass 150 Full-Face Buna-N Gasket for 3 in. PipeWBB2266511
Use Cases

Seal compatible flanged pipe connections

These gaskets are used by plumbing, piping, and maintenance professionals to create a sealing interface between mating flanges in commercial plumbing, piping maintenance, and water-system applications.

How to Choose

Match profile, size, class, and thickness

Select a ring gasket for a raised-face flange or a full-face gasket for a flat flange. Confirm the stated pipe size, Class 150 compatibility, required thickness, material, and minimum order before purchasing.

Applications

Support plumbing and piping assemblies

Available options support specified Class 150 connections from 1/2 in. to 6 in. pipe. Full-face styles include bolt holes to help with placement and alignment during installation.

Additional Info

Compare material options carefully

Aramid and Buna-N options resist oil, water, and mild chemicals. Silicone is suited to a broad temperature range and resists water, mild chemicals, and animal and vegetable oils. Fluoroelastomer resists oil, chemicals, and heat, while compressible PTFE provides a compressible gasket option.

1/2–6 in.Pipe sizes represented

Options are available for stated pipe sizes from 1/2 in. through 6 in.

2Gasket profiles

Choose ring profiles for raised-face flanges or full-face profiles for flat flanges.

1/16 or 1/8 in.Thicknesses represented

Match the gasket thickness stated for the compatible flange assembly.

Class 150Flange application

The represented products are identified for compatible Class 150 applications.

Comparison Guide

Ring vs. full-face flange gaskets

Use the flange-face design and the product’s stated fit to narrow the selection.

Selection factorRing gasketFull-face gasket
Compatible flange faceRaised-face or raised-surface flangesFlat pipe flanges
Profile and installationFocused sealing interface; does not require mechanical mountingCovers the flange face and includes bolt holes for mounting, placement, and alignment
Represented material optionsAramid and Buna-N, silicone, and fluoroelastomerBuna-N, fluoroelastomer, and compressible PTFE
Planning Guide

Plan the right fit before choosing

Start with flange profile

Choose ring or full-face construction

The sealing-surface style is the first selection point. Ring gaskets are designed for raised-face or raised-surface flanges and do not require mechanical mounting. Full-face gaskets cover the flange face and include bolt holes for mounting, placement, and alignment on flat pipe flanges.

  • Use ring profiles on compatible raised-face flange connections.
  • Use full-face profiles on compatible flat pipe flanges.
  • Use the bolt-hole pattern on full-face styles to help position the gasket during installation.
Match the connection

Confirm pipe size, Class 150 designation, and thickness

Available gaskets are identified for compatible Class 150 pipe connections. Match the stated pipe size and select the thickness specified for the assembly.

  • Available pipe sizes range from 1/2 in. through 6 in.
  • All represented options are identified for Class 150 applications.
  • Available thicknesses include 1/16 in. and 1/8 in.
Select the gasket material

Compare resistance needs with the material described

Material selection depends on the conditions stated for the application. Several options are available across ring and full-face profiles, but profile, pipe size, and thickness vary by product.

  • Aramid and Buna-N constructions provide resistance to oil, water, and mild chemicals.
  • Silicone provides resistance to water, mild chemicals, and animal and vegetable oils, and is suited to a broad temperature range.
  • Fluoroelastomer provides resistance to oil, chemicals, and heat.
  • Compressible PTFE is available as a full-face option for 1/2 in. pipe.
FAQ

Common questions before buying

What is the difference between ring and full-face flange gaskets?

Ring gaskets are designed for raised-face or raised-surface flanges. Full-face gaskets cover flat flange faces and include bolt holes.

What pipe sizes are represented in this category?

The available summaries include gaskets for 1/2 in., 3/4 in., 1 in., 1-1/4 in., 1-1/2 in., 2 in., 3 in., 4 in., and 6 in. pipe.

What materials are available?

Represented materials include aramid and Buna-N, Buna-N rubber, silicone, fluoroelastomer, and compressible PTFE.

Are all of these gaskets for the same flange class?

The represented products are identified for compatible Class 150 flange applications.

!