Food-Grade Seals | McMaster-Carr

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Environment

Food Industry Standard

3-A Sanitary Standard

For Use With

Diluted Salt Solutions

Material

System of Measurement

Color

Width

Maximum Temperature

Thickness

Hardness Rating

Shape

Hardness

Seal Width

Cross Section Shape

Backing Type

Mount Type

Minimum Temperature

RoHS

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

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

Yes

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

Export Control Classification Number (ECCN)

5,767 Products

Most Likely Products

Edge Seals

Block dust, water, and wind from entering the gaps around doors and windows

80 products

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

30 products

O-Rings

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

2,798 products

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

24 products

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

325 products

Piston Seals

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

19 products

Rubber

Compresses and bounces back to shape; often used for sealing, cushioning, and shock absorbing

1,455 products

All Results

Sealing

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

30 products

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

24 products

Piston Seals

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

19 products

Packing Seals

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

71 products

Buffering Seals

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

13 products

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

5 products

U-Cup Seals

With a lip on both the inside and outside edges, they can be used for sealing rods and pistons

9 products

Edge Seals

Block dust, water, and wind from entering the gaps around doors and windows

80 products

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

325 products

Hose Coupling Gaskets

Form tight seals on cam-and-groove, grip-lock, and twist-claw hose connections

49 products

Gasket Material

Cut custom shapes and sizes to fill gaps between flat surfaces

62 products

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

113 products

Hose Washers

Place inside nozzles and spigots to prevent leaks in an attached hose

2 products

Gasket Tape

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

20 products

Manway Gaskets

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

1 product

Gasket Makers

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

1 product

O-Rings

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

2,798 products

Cord Stock

Cut to length to create customized seals

49 products

Sealants

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

59 products

Thread Sealants

Create a seal between threaded connections to prevent loosening from vibration

76 products

Raw Materials

Rubber

Compresses and bounces back to shape; often used for sealing, cushioning, and shock absorbing

1,455 products

Foam

Pockets of air make it lighter in weight than rubber; good for packing, insulating, and sealing

102 products

Fastening and Joining

Sealing Washers

Prevent fluids from leaking around fasteners

138 products

Spacers

Unthreaded to create space between two surfaces or objects, often to align them

7 products

Mounting Adhesives

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

3 products

Retaining Compounds

Fill gaps to bond shafts, bearings, press-fit assemblies, and other cylindrical metal parts

9 products

Structural Adhesives

Strong enough to replace screws and rivets for many jobs

1 product

Threadlockers

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

8 products

Adhesive Primers

Prepare surfaces before adding adhesives to improve bonding strength

4 products

Adhesive Cement

Form strong bonds on plastic, rubber, ceramic, and other materials

5 products

Glue

The first choice for everyday bonding and repairs

5 products

Hot Glue

Melt for rapid bonds in a range of applications, from packaging to woodworking

13 products

Repair and Duct Tape

Permanently join or seal surfaces

1 product

Building and Machinery Hardware

Edge Trim

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

45 products

Grommets

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

8 products

Surface Guards

Protect walls and other flat surfaces from impact

4 products

Protective Plugs

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

12 products

Protective Caps

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

44 products

Material Handling

Conveyor Brushes

Position items on conveyor belts and wipe off debris

27 products

Screw Conveyors

Push material through fixed troughs

3 products

Facility and Grounds Maintenance

Surface Fillers

Repair chips, cracks, and tears in various surfaces

6 products

Protective Coatings

Shield surfaces from the surrounding environment

2 products

Fluid Handling

Gauge Guards

Shield gauges from corrosive liquids and gases; also called diaphragm seals

3 products

Tube and Tube Fittings

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

15 products

Hose and Hose Fittings

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

13 products

Communication

Tamper-Evident Seals

Secure hasps, latches, and other connections to visibly indicate tampering

2 products

Electrical Power, Networking, and Controlling

Electrical Enclosure Plugs

Block or seal holes in outlet boxes and enclosures to keep out debris, dust, and moisture

1 product

Wire Sleeving

Bundle wiring and protect from abrasion and heat

8 products

Safety Equipment

Bearing Guards

Shield bearings from dirt, and protect fingers and tools from moving parts

3 products