PartsTable / COMPONENT / 638C1
638C1
✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW
The COVER,ACCESS is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-360-8334, indicating validated use in U.S. government and defense logistics supply chains.
Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.
WHERE IT FITS
638C1
NSN: 5340-00-360-8334 FSC: 5340 CAGE: 92679 — NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/ (USA)
SPECIFICATIONS
Part Number 638C1 NSN 5340-00-360-8334
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION
ID: —
CROSS-SECTION
CS: —
SPECIFICATION
Material: —
Durometer: —
Temp: —
PN: 638C1
MFR: OEM
⚠ VERIFY BEFORE ORDERING
Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade.
Chemical incompatibility causes swelling, brittleness, or rapid degradation
✓ BROKER TIP
Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure.
Standard durometer is 70A — verify if application requires different hardness
PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
PA658 Interchangeable interchangeable cross-reference
interchangeable
AF132 Interchangeable interchangeable cross-reference
interchangeable
FA7 Interchangeable interchangeable cross-reference
interchangeable
SA681 Interchangeable interchangeable cross-reference
interchangeable
3-0SA68-166 Interchangeable Same NIIN cross-reference
interchangeable
WUC249A Interchangeable Same NIIN cross-reference
interchangeable
LIFECYCLE
Status CANCELLED
Availability —
RoHS Compliant EAR99 Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 638C1?
638C1 is a COVER,ACCESS.
What parts can replace 638C1?
There are 8 known substitutes for 638C1: PA658, AF132, FA7 and 5 more. Substitute compatibility should be verified for your specific system.
Is 638C1 still available?
638C1 is currently cancelled.