Pump Seals | McMaster-Carr

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522 Products

Rotary Shaft Seals

Mechanical Pump Shaft Seals with Extended Spring

An extended spring on these seals accommodates variations in seal cavity length and pump misalignment.

Narrow-Profile Mechanical Pump
Shaft Seals with Extended Spring

With a smaller seal OD than standards seals, these seals have an extended spring that accommodates variations in seal cavity length.

Mechanical Pump Shaft Seals

These seals are commonly used in well, sump, and displacement pumps.

Mechanical Pump Shaft Seals with Compact Spring

Built for small circulation and dispensing pumps, these seals have short springs.

Heavy Duty Mechanical Pump Shaft Seals

Multiple internal springs ensure these seals keep the sealing surfaces in contact in demanding applications, such as agricultural, chemical, and mining pumps.

Spring-Loaded Rotary Shaft Seals

Also known as oil seals, use these to retain oil on rotating shafts in motors, pumps, bearings, and gearboxes. A spring secures the lip against the shaft, preventing messy leaks. Press-fit seals into the bore around the shaft.

Cartridge Mechanical Seals

Install these seals faster and with less technical expertise than other mechanical shaft seals that come in two pieces. They come with their seal and seat already assembled.

Packing Seals

Food Industry Chemical-Resistant Packing Seals

Made of FDA-listed material for use with food and beverage, these PTFE seals are lubricated with mineral oil. Use them in pumps.

Chemical-Resistant Packing Seals

These lubricated PTFE fiber seals stand up to most chemicals. Use them in pumps and valves.

Abrasion- and Chemical-Resistant Packing Seals

Aramid and PTFE fibers are blended for seals that resist chemicals and abrasion. Use these seals in pumps.

High-Speed Chemical-Resistant Packing Seals

Built for high-speed pump and valve applications, these super-tough seals are made of expanded-graphite yarn with carbon-yarn corners.

Heat-Shielding Abrasion- and
Chemical-Resistant Packing Seals

Made of ePTFE with a graphite filler and reinforced by Aramid, these seals combine heat protection with chemical and abrasion resistance.

Heat-Shielding Chemical-Resistant Packing Seals

Also known as 100% GFO, these expanded PTFE seals contain graphite powder, which dissipates heat away from the shaft and allows pumps to run cool at high speeds.

Oil- and Water-Resistant Packing Seals

Made of PTFE-impregnated synthetic fiber, these seals are for use in pumps.

Ultra-Sealable Oil- and
Water-Resistant Packing Seals

Our most compressible packing seals, these require less pressure than any other to make an effective seal. They’re made of lubricated PTFE-impregnated aramid fiber and are for use in pumps.

Abrasion-, Oil-, and Water-Resistant Packing Seals

The most abrasion resistant of all our packing seals, these are made of PTFE-impregnated aramid fiber that has been saturated in a lubricant. They are for use in pumps.

Heat-Shielding Oil- and
Water-Resistant Packing Seals

Synthetic yarn that’s comparable in strength to aramid is combined with graphite for soft seals that dissipate heat away from the shaft to extend the life of pumps.

Low-Friction Oil- and Water-Resistant Packing Seals

Since they require lighter packing pressure than standard oil- and water-resistant packing seals, these seals cause less friction and reduce shaft wear. They are for use in pumps and valves.

High-Flexibility Steam-Resistant Packing Seals

Offering excellent flexibility, these seals are made of expanded graphite yarn. Use them for steam applications in pumps and valves.

Steam-Resistant Packing Seals

Use these graphite-impregnated graphite seals for steam applications in pumps and valves.

High-Speed Steam-Resistant Packing Seals

Made of graphite-impregnated carbon, these steam-resistant seals dissipate heat from the shaft to protect pumps and valves when operating at high speeds.

Water- and Salt-Water-Resistant Packing Seals

Made of flax fiber, these seals are excellent for marine applications since they resist salt water.

High-Pressure Leather
Stackable V-Ring Packing Seals

These leather V-ring packing seals handle over twice the pressure as PTFE. Leather is tough, pliable, and wear resistant, so it flexes to fit uneven surfaces and fill voids.

PTFE Stackable V-Ring Packing Seals

PTFE has excellent chemical resistance and withstands a wide temperature range of -110° F to 500° F.

Packing Seal Lubricating Rings

Install between layers of packing seals to ensure lubricants are distributed evenly. These lubricating rings are also known as lantern rings.

Packing Seal Tape

For use in valves and pumps, this thin, flexible tape is made from high-purity graphite with no fibers or binders that could contaminate your process line.

Rubber

Food Industry Multipurpose Neoprene Rubber Balls

Loosen fine particles from the grip of vibrating-sifter screens with the bounce of rubber balls. Also use them as seals in pumps and check valves. They’re made from FDA-listed materials for use with food and beverage.

High-Strength Multipurpose Neoprene Rubber Balls

Let these balls bounce inside of vibrating sifters for an effective screen cleaner or use them as seals in pumps and check valves.

Chemical-Resistant Viton®
Fluoroelastomer Rubber Balls

Clean screens in vibrating sifters with the bounce of these balls, or use them as seals in pumps and check valves.

Weather-Resistant EPDM Rubber Balls

Made of EPDM, these rubber balls won’t degrade from sunlight, ozone, or water. They can be used to clean screens inside vibrating sifters, dampen vibration inside assemblies, and seal pumps and check valves.

Food Industry Abrasion-Resistant
Polyurethane Rubber Balls

Safely use these balls in food and pharmaceutical environments to clean screens in vibrating sifters or to act as a seal in pumps and check valves.

Abrasion-Resistant Polyurethane Rubber Balls

Use these polyurethane balls as seals in pumps and check valves or let them bounce inside of vibrating sifters for an effective screen cleaner. They are made of polyurethane, which combines the shock absorbing qualities of rubber with the strength of plastic.

Food Industry Abrasion-Resistant
Natural Rubber Balls

FDA compliant for direct contact with food, these balls are often used to clean screens in vibrating sifters in food, beverage, and other sanitary environments. You can also use them as seals in pumps and check valves.

High-Temperature Silicone Rubber Balls

Use these balls as seals in pumps and check valves, or let them bounce inside of vibrating sifters as an effective screen cleaner.

Oil-Resistant Buna-N Rubber Balls

Use these balls as seals in pumps and check valves or let them bounce inside of vibrating sifters for an effective screen cleaner.