Buffer Seals

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 | 36 MM Nominal Inner Diameter | Buffer 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 | 63 MM Nominal Inner Diameter | Buffer Seal

RB-STL/PTF-75×80×40

These lip-type buffer seals are designed for replacement in Caterpillar® cylinders. The hinged-lip design reduces friction, heat, and wear under low-pressure conditions and acts as a check valve allowing back-pressure relief. Seals for rod sizes 2-1/8” and under do not have a back-up ring.

Urethane Material | 2 3/8 in Nominal Inner Diameter | Buffer Seal

ROD BUFFER 2.5in

RB-STL/PTF-1.500×1.656×0.750

With a wider temperature range and a higher pressure rating than the standard DYR style, the DYR-BR43 rod buffer seal offers an asymmetric sealing lip profile, chamfered sealing edges, and pressure relieving capabilities to prevent inner pressure entrapment when employed in a tandem sealing system.

90A Durometer | Urethane Material | 3 1/2 in Nominal Inner Diameter | Buffer Seal

See Caterpillar® heading in kit catalog for more Caterpillar® replacement parts.

Bronze Filled PTFE Material | 2 1/2 in Nominal Inner Diameter | Buffer Seal

RB-STL/PTF-1.000×1.125×1.000

RB-STL/TFE-1.250×1.406×1.750