Pipe Seals | McMaster-Carr

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Diluted Salt Solutions

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Viton® Fluoroelastomer

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

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DFARS Specialty Metals

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Specifications Met

OSHA Compliant 29 CFR 1926.701

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Fractional ID

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UN/UNF (SAE Straight)

22,390 Products

Sealing

Pipe Flashings

Create watertight seals around vent pipes on roofs, even if they expand, contract, and vibrate

13 products

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

1,392 products

Drain Gaskets

Create a watertight seal between your drain and fixture without the mess of plumber's putty

3 products

Gasket Makers

Seal irregular shapes and tiny crevices by applying a bead that hardens into a gasket

58 products

Gasket Tape

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

94 products

Gasket Sealants

Seal gaskets on metal parts

1 product

Pipe Flashing Seals

Slide over roof flashings for a watertight seal without the need for caulk

3 products

O-Rings

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

13,871 products

Thread Sealants

Create a seal between threaded connections to prevent loosening from vibration

183 products

Packing Seals

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

1 product

Backup Rings

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

360 products

Rope Seals

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

36 products

Building and Machinery Hardware

Grommets

Protect wire, cable, and cords from holes with sharp or rough edges

562 products

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

256 products

Protective Plugs

Insert into holes in pipe, containers, panels, and parts to keep out debris

1,009 products

Protective Caps

Protect just about anything, including pipe, flanges, screws, and posts

1,069 products

Fluid Handling

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

346 products

Bore Sealing Plugs

Permanently seal unthreaded holes in pneumatic and hydraulic components

95 products

Tube Fitting Rings

Snap onto push-to-connect fittings to identify different tubing lines

33 products

Pipe Joiners

Connect heavy and difficult-to-position gasketed pipe without powered equipment

1 product

Hose and Hose Fittings

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

279 products

Pipe and Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases

2,497 products

Facility and Grounds Maintenance

Floor Drain Trap Seals

Stop sewer gases from escaping through rarely used floor drains if the P-trap dries out

4 products

Drain Check Valves

Prevent water damage by placing into floor drains to stop sewer back-ups

3 products

Drain Cleanouts

Create an access point to inspect and clean floor drain pipelines

3 products

Rebar Caps

Brightly colored to alert workers to exposed rebar and pipe

4 products

Electrical Power, Networking, and Controlling

Heat-Shrink Tubing

Apply heat to seal and insulate electrical wiring and connections

3 products

DIN Rail Caps

Guard the edges of DIN rail from damage and create a finished look

2 products

Capacitor Boots

Shield capacitors and wire connections to extend their service life and reduce accidental shocks

3 products

Containers, Storage, and Furniture

Dust Covers

Stretch over drums, pails, and other objects to keep out dust and debris

6 products

Fastening and Joining

Quick-Release Pin Receptacles

Secure quick-release pins when you don’t have a through hole

36 products

Quick-Release Pin Retaining Caps

Hold quick-release pins in holes that are oversized or out of round

23 products

Standoff Caps

Create a finished look on standoffs and protect them from dirt and debris

66 products

Measuring and Inspecting

O-Ring Gauges

Identify the size of your O-ring

4 products

Fabricating and Machining

Fixture Plate Plugs

Keep chips and shavings from clogging or damaging unused holes on fixture plates in milling machines

8 products

Material Handling

Conveyor Guide Mounting Rod Caps

Cover the ends of conveyor guide mounting rods for a finished look

7 products

Heating, Ventilation, and Air Conditioning

Air Conditioner Service Valve Caps

Seal off AC service valves to prevent refrigerant from leaking out

2 products