Piston Seals

T-Seals combine a resilient sealing ring with a hard, split back-up ring on each side of the sealing element. The assembly installs in a standard o-ring groove. T-Seals are non-spiraling and extrusion resistant to 5,000 psi with improved tolerances. Intermediate and Wide Base T-Seals are designed to fit MIL-5514F o-ring glands only and interchange with 1 o-ring / 1 back-up ring and 1 o-ring / 2 back-up ring grooves, respectively.

Buna-N Rubber Material | 1 7/8 in Nominal Inner Diameter | Piston T-Seal

A heavy duty double-acting assembly, the capped piston T-seal exhibits excellent sealability, extrusion resistance, and wearability. T-seals with “BR” suffix utilize a Bronze Filled PTFE cap instead of the standard Glass Filled PTFE cap.

PTFE; Nylon; Rubber Material | 2.52 in Nominal Inner Diameter | Capped Piston T-Seal

Features

• Glass-filled PTFE cap, nylon back-up, rubber energizer

3.250 X 2.772 X .579 Capped T

Caterpillar® part numbers are used as a reference only. We do not imply that these parts are original equipment parts.

3 in Nominal Inner Diameter | Piston Seal

A heavy duty double-acting assembly, the capped piston T-seal exhibits excellent sealability, extrusion resistance, and wearability. T-seals with “BR” suffix utilize a Bronze Filled PTFE cap instead of the standard Glass Filled PTFE cap.

PTFE; Nylon; Rubber Material | 3.02 in Nominal Inner Diameter | Capped Piston T-Seal

Features

• Glass-filled PTFE cap, nylon back-up, rubber energizer

Caterpillar® part numbers are used as a reference only. We do not imply that these parts are original equipment parts.

4 1/2 in Nominal Inner Diameter | Piston Seal

Piston diameter “I” dimensions are given for pistons without wear rings.

15% Glass Filled PTFE Material | 1.162 in Nominal Inner Diameter | Piston Seal

Features

• Easy assembly
• Low friction capabilities

Piston diameter “I” dimensions are given for pistons without wear rings.

15% Glass Filled PTFE Material | 3.103 in Nominal Inner Diameter | Piston Seal

Features

• Easy assembly
• Low friction capabilities

The PS1800 provides low friction, high strength piston sealing. The PS1800 also provides double-acting piston sealing in a compact design that meets the requirements of ANSI/B93-32-1973. Piston diameter “I” dimensions are given for pistons without wear rings.

15% Glass Filled PTFE Material | 15/16 in Nominal Inner Diameter | Piston Seal

Features

• Easy assembly
• Low friction capabilities

The PS1850-V piston seal can be used interchangeably with the PS1800 style piston seal. This seal provides improved heat resistance for demanding applications. Piston diameter “I” dimensions are given for pistons without wear rings.

15% Glass Filled PTFE Material | 2 11/16 in Nominal Inner Diameter | Piston Seal

Features

• Easy assembly
• Low friction capabilities