Cummins Adapter O-ring 3631471

Core Applications

 High-Pressure Fuel Systems: QSK60/QST30 injector adapters (3,000 PSI continuous operation)

Thermal Management: EGR cooler connections (650°F gas temps)

 Hydraulic Circuits: Excavator implement valve blocks (ISO 10763 compatibility)

Key Differentiators

Feature | 3631471 | Generic O-Rings

Temperature Range -40°F to +446°F (-40°C to +230°C) | -22°F to +302°F (-30°C to +150°C)

Chemical Resistance | ULSD, B100 biodiesel, DEF fluid | B20 biodiesel limit

Cycle Life | 50,000 pressure cycles (SAE J343) | 15,000 cycles

Fluorocarbon Compound (FKM) Enhancements

Base Polymer: Viton® GLT-S (70 Durometer)

Additive Package:

15% carbon black for UV/ozone resistance (ASTM D2000 M2EE 714)

 PTFE microspheres reduce friction coefficient by 40%

Certifications:

NSF/ANSI 61 for potable water systems

 NORSOK M-710 compliance for offshore applications

Tooling Requirements

 Surface Prep: Cummins 4922474 solvent (VOC-free formulation)

Installation Kit: JH43870 O-Ring toolset with:

Snap gauge for groove inspection

 Angled insertion picks

Torque-limiting driver (18-22 N·m range)

Critical Process Controls

1. Groove Inspection: Verify 0.2-0.5μm Ra surface finish

2. Lubrication: Apply Permatex® 80078 anti-extrusion grease

3. Torque Sequence: 3-stage tightening for flanged joints

Interval  Inspection Method Acceptance Criteria 

500 Service Hours  Ultraviolet Leak Detection  <0.1 mL/hr fluid loss 

2,000 Service Hours Durometer Hardness Test Max 10-point Shore A change 

5,000 Service Hours  Cross-Section Microscopy <0.2mm compression set