PTFE Seals | McMaster-Carr

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Diluted Salt Solutions

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Low Stress-to-Seal Flanges

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Seal Width

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

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DFARS Specialty Metals

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Finish

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Primer Required for Use On

2,214 Products

Sealing

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

67 products

Piston Seals

Prevent leaks inside pistons by creating a seal against the cylinder bore

29 products

Packing Seals

Fill in gaps around pump shafts, valve stems, and agitators to prevent leaks

136 products

Packing Seal Lubricating Rings

Install between layers of packing seals to distribute lubricants evenly; also known as lantern rings

8 products

Spring-Loaded Seals

Seal rods and pistons with a wider range of temperature and chemical resistance than U-cup seals

36 products

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

11 products

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

7 products

Wear Rings

Guide rods and pistons to prevent uneven wear and extend the life of seals

29 products

Buffering Seals

Protect hydraulic cylinders from pressure spikes and shock in high-pressure applications

9 products

Wear Ring Stock

Cut to make wear rings that fit any rod or bore to prevent uneven wear and extend the life of seals

12 products

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

109 products

Gasket Tape

Seal openings such as those around windows, enclosures, and pipe flanges to prevent leaks

52 products

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

441 products

Gasket Material

Cut custom shapes and sizes to fill gaps between flat surfaces

63 products

Made-to-Order Gaskets

Send your exact specifications to get gaskets that fit precisely between surfaces

4 products

Manway Gaskets

Create a tight seal between the nozzle and lid of tank car manways

4 products

O-Rings

Fit snugly into a groove between parts to create a leak-resistant seal

373 products

Backup Rings

Extend the life of O-rings and improve their performance under high pressure

122 products

Thread Sealants

Create a seal between threaded connections to prevent loosening from vibration

72 products

Sealants

Fill and seal gaps in metal, plastic, wood, and other materials

13 products

Rope Seals

Insulate the edges of oven, furnace, and boiler doors to keep heat in

4 products

Building and Machinery Hardware

Edge Trim

Install on panels, boards, signs, and mirrors to protect edges from impact

14 products

Fastening and Joining

Sealing Washers

Prevent fluids from leaking around fasteners

11 products

Structural Adhesives

Strong enough to replace screws and rivets for many jobs

13 products

Threadlockers

Coat threads on threaded fasteners to prevent loosening from impact and vibration

5 products

Adhesive Primers

Prepare surfaces before adding adhesives to improve bonding strength

6 products

Mounting Adhesives

Mount objects with a range of adhesives, including glue-on-a-roll and glue shapes

14 products

Contact Adhesives

Apply adhesive, air dry, and bring surfaces together to bond

4 products

Mounting Tape

Mount everything from signs and panels to carpet and padding

7 products

Electrical Power, Networking, and Controlling

Wire Sleeving

Bundle wiring and protect from abrasion and heat

45 products

Material Handling

Low-Friction Tape

Create a slippery lining to keep parts moving or use as a release surface on heat sealers and molds

473 products

Conveyor Brushes

Position items on conveyor belts and wipe off debris

3 products

Facility and Grounds Maintenance

Surface Fillers

Repair chips, cracks, and tears in various surfaces

1 product

Fluid Handling

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

12 products