Sealing Cords | McMaster-Carr

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FDA Compliant 21 CFR 175.105

FDA Compliant 21 CFR 177.1550

FDA Compliant 21 CFR 177.2600

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1,209 Products

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Cord Stock

Oil-Resistant Cord Stock

Oil-Resistant Buna-N Cord Stock

Buna-N resists hydraulic oils, motor oil, petroleum fluids, and synthetic lubricants

61 products

Square-Profile Oil-Resistant Buna-N Cord Stock

Flat edges seal better than round profile in hose, pipe, faucet, and other static connections

41 products

X-Profile Oil-Resistant Buna-N Cord Stock

Four points of contact seal better in dynamic applications than round profile

28 products

Oil-Resistant Soft Buna-N Cord Stock

Softer for a better seal in low-pressure applications than standard Buna-N cord stock

38 products

FDA-Compliant Oil-Resistant Buna-N Cord Stock

Often used to seal winding grooves in food and beverage lines

30 products

Oil-Resistant Hard Buna-N Cord Stock

Harder than standard Buna-N cord stock for better wear resistance

22 products

Mil. Spec. Oil-Resistant Buna-N Cord Stock

Made to MIL-G-21610C standards for heat exchanger gaskets, it withstands frequent temperature swings

22 products

Weather- and Oil-Resistant HNBR Cord Stock

More hydrogen than Buna-N to better withstand weather, chemicals, and abrasion

22 products

Chemical-Resistant Cord Stock

Square-Profile Chemical-Resistant Viton® Fluoroelastomer Cord Stock

Flat edges seal tighter than round profile in faucets and other stationary parts

34 products

Chemical-Resistant Viton® Fluoroelastomer Cord Stock

Viton® fluoroelastomer resists a variety of chemicals, such as benzene and butyl alcohol

40 products

Chemical-Resistant Soft Fluoroelastomer Cord Stock

Softer for a better seal in low-pressure applications than standard fluoroelastomer cord stock

26 products

Weather- and Chemical-Resistant Santoprene Cord Stock

Flexible like rubber and durable like plastic to resist weather and harsh chemicals without cracking

17 products

X-Profile Chemical-Resistant Viton® Fluoroelastomer Cord Stock

Four points of contact so it's less likely to roll or twist than round or square profile

22 products

Chemical-Resistant Hard Viton® Fluoroelastomer Cord Stock

Harder than standard Viton® fluoroelastomer cord stock for better wear resistance

28 products

FDA-Compliant Chemical-Resistant Viton® Fluoroelastomer Cord Stock

Create seals for equipment used in food, beverage, or pharmaceutical lines

16 products

Steam- and Chemical-Resistant Viton® ETP Fluoroelastomer Cord Stock

Our most chemical-resistant cord stock resists steam and harsh chemicals, such as hydrochloric acid

8 products

High-Temperature Cord Stock

High-Temperature Silicone Cord Stock

Create O-rings for applications up to 400° F

48 products

High-Temperature Soft Silicone Cord Stock

Softer for a better seal than standard silicone cord stock in low-pressure applications

31 products

Metal- and X-Ray Detectable High-Temperature Silicone Cord Stock

Sets off metal detectors and X-ray machines if a piece falls into your line

15 products

Square-Profile High-Temperature Silicone Cord Stock

Flat edges seal better than round profile in hose, pipe, faucet, and other static connections

28 products

High-Temperature Hard Silicone Cord Stock

With a 90A durometer, this is harder and more wear resistant than standard silicone cord stock

27 products

Mil. Spec. High-Temperature Silicone Cord Stock

Create custom silicone gaskets that meet MIL-G-21610C standards for use in heat exchangers

8 products

Water- and Steam-Resistant Cord Stock

Water-Resistant Soft Neoprene Cord Stock

Softer for a better seal in low-pressure applications than standard neoprene cord stock

20 products

Water- and Steam-Resistant EPDM Cord Stock

EPDM resists water, steam, diluted salt solutions, ethanol, and isopropyl alcohol

33 products

Water-Resistant Neoprene Cord Stock

Make O-rings for applications that come into contact with water

16 products

Square-Profile Water- and Steam-Resistant EPDM Cord Stock

Flat edges cover more surface area than round-profile cord stock

13 products

Water- and Steam-Resistant Soft EPDM Cord Stock

Easier to compress than standard EPDM for a tighter seal on uneven surfaces

10 products

Other Products

Packing Seals

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

231 products

Sealants

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

16 products

Rope Seals

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

135 products

O-Ring Bonding Kits

Everything needed to make O-rings

51 products

Backer Rods

Insert into gaps before caulking to reduce how much sealant you need and improve adhesion

35 products

Thread Sealants

Create a seal between threaded connections to prevent loosening from vibration

65 products

Repair and Duct Tape

Permanently join or seal surfaces

2 products

Backer Rod Insertion Tools

Quickly set foam backer rods in caulk joints at a consistent depth without puncturing them

2 products