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Technical Data Sheet
PartsTable / COMPONENT / 138998H1
138998H1 ✓ 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 GASKET is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-607-3505, 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
138998H1
NSN: 5330-00-607-3505
FSC: 5330
CAGE: 29510 — KOMATSU AMERICAN INTL CO (USA)
SPECIFICATIONS
Part Number138998H1
NSN5330-00-607-3505
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 138998H1 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 14
2-300-387-06Interchangeable
interchangeable cross-reference
interchangeable
5330PL2122765Interchangeable
interchangeable cross-reference
interchangeable
4-287-08Interchangeable
interchangeable cross-reference
interchangeable
88036LR1CJInterchangeable
interchangeable cross-reference
interchangeable
88036X1HInterchangeable
interchangeable cross-reference
interchangeable
88036X1LTInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 138998H1?
138998H1 is a GASKET.
What parts can replace 138998H1?
There are 14 known substitutes for 138998H1: 2-300-387-06, 5330PL2122765, 4-287-08 and 11 more. Substitute compatibility should be verified for your specific system.
Is 138998H1 still available?
138998H1 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026