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Commonly used with metric o-rings, these back-up rings are made of virgin PTFE unless suffix specifies otherwise.

PTFE Material | 57 MM Nominal Inner Diameter | 2.5 MM Cross Section | Backup Ring

Features

• High strength and abrasion resistance
• Wide temperature range
• Chemical resistance
• Low friction
• Easy installation

Molded in nitrile with a steel case, this seal is double cased and used to exclude contaminants from cylinder link pins.

Urethane Material | 90 MM Nominal Inner Diameter | Dust Seal

Molded in PTFE with a rubber energizer, this seal absorbs the shock of pressure spikes to protect the rod seal.

70A Durometer | Filled PTFE Buffer Material | 32 MM Nominal Inner Diameter | Buffer Seal

Incorporating a rubber seal lip, a rubberized fabric heel, and an acetal back-up ring, this seal provides excellent sealability and high extrusion resistance.

80 Durometer | NBR Material | 25 MM Nominal Inner Diameter | Rod U-Seal

These seals are specifically designed to seal on their inside diameter and engineered to attain maximum life and reliability in dynamic rod sealing.

92A Durometer | Urethane Material | 1 1/8 in Nominal Inner Diameter | 3/16 in Cross Section | U-Seal

PP-50200125A has been machined to fit a 5 in cylinder bore and has a 1.25 in rod hole. The piston length is 2 in.

Piston is designed for a Polypak seal.

Matching seal kit is available.

Parback® backup ring with a curved cross-section.

Parbaks are contoured on one face to minimize distortion of the o-ring when under pressure. Parbaks should be installed with the contoured face against the o-ring, but reversal does no harm.

90A Durometer | Buna-N Rubber Material | 1 5/8 in Nominal Inner Diameter | 3/16 in Cross Section | Backup Ring

Features

• Excellent extrusion resistance
• Easily stretched for installation
• Lubrication is enhanced by rubber which absorbs system fluid and does not plate out on rubbing surfaces

Utilizing tough polyurethane, these seals possess excellent wear and abrasion resistance. Symmetrical in design, they can be used in rod or piston applications. E= European Urethane.

Urethane Material | 32 MM Nominal Inner Diameter | U-Seal

Wear rings provide a hard-wearing surface that protects the cylinder walls and the piston rod from scoring and abrasion. By maintaining alignment and reducing side loads, these rings facilitate smoother piston movement and lower friction levels.

Nylon Material | 3 3/4 in Nominal Inner Diameter | 1/8 in Cross Section | Wear Ring

Features

• Scarf Cut wear ring
• Protection Against Wear
• Reduced Friction
• Extended Cylinder Life
• Operational Efficiency

A wide range of ST wipers are now offered in the slotted heel design. The slots in the heel allow excess hydraulic fluid to bypass the wiper, preventing wiper blowout.

90A Durometer | Urethane Material | 2 1/2 in Nominal Inner Diameter

Features

• Slotted heel design
• Slots in the heel allow excess hydraulic fluid to bypass the wiper