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AMAT 0090-07135
AMAT 0090-07135

Parker 87-008145-03

Manufacturer: Parker Hannifin Corporation

Product Overview:
Precision-molded elastomeric seal assembly designed for high-pressure fluid power applications. This part number corresponds to a dedicated O-ring and backup ring combination used in Parker hydraulic and pneumatic cylinder assemblies.

Category:
Description

Material Composition:

  • Primary Seal: FKM (Viton®) Fluorocarbon Rubber — 75 Durometer Shore A
  • Backup Ring: PTFE (Polytetrafluoroethylene) — White, virgin grade
  • Housing Material Compatibility: Carbon steel, stainless steel 316L, aluminum 6061-T6

Technical Specifications:

Parameter Value
Inner Diameter (ID) 2.875 in (73.03 mm)
Cross Section (CS) 0.139 in (3.53 mm)
Operating Pressure Range 0 – 5,000 psi (345 bar)
Operating Temperature Range -20°F to +400°F (-29°C to +204°C)
Fluid Compatibility Mineral oil, HFC, HFD, phosphate ester, water-glycol
Hardness 75 Shore A (primary), 55 Shore D (backup)

Structural Features:

  • Single-piece O-ring with PTFE anti-extrusion backup ring
  • Squeeze groove design per SAE AS568A standard
  • Surface finish requirement: 16–32 µin Ra on mating metal surface

Functional Characteristics:

  • Provides zero-leakage static sealing under 5,000 psi continuous pressure
  • Anti-extrusion protection at pressures exceeding 3,000 psi via PTFE backup
  • Low friction coefficient (0.04–0.10) enables smooth dynamic reciprocation

Applicable Industries:
Aerospace hydraulic actuators, industrial presses, offshore drilling equipment, mobile construction machinery

Installation Requirements:

  • Lubricate seal with system-compatible hydraulic fluid before installation
  • Use dedicated installation tools — no sharp edges on tooling
  • Groove dimensions must comply with Parker Seal Design Manual 4400

Usage Notes:

  • Do not exceed 400°F (204°C) continuous service temperature
  • Replace seal upon any visual sign of extrusion, cracking, or permanent set
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