O-Ring Backup Rings | McMaster-Carr

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302 Products

Backup Rings

Ultra-Chemical-Resistant PTFE Backup Rings

Ultra-Chemical-Resistant PTFE Backup Rings

Withstand acetone, fluorinated solvents, methanol, and many acids

Oil-Resistant Buna-N Backup Rings

Oil-Resistant Buna-N Backup Rings

Resist grease, petroleum fluids, and motor oil

PTFE Backup Ring Assortments

PTFE Backup Ring Assortments

Keep a variety of ultra-chemical-resistant PTFE backup ring sizes on hand

Other Products

Piston Seals

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

Head Seals

Maintain a seal even under fluctuating pressure; more reliable than an O-ring with a backup ring

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)