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Technical Data Sheet
367998R1 ✓ 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

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL ALLOY, design_type: SOLID, end_diameter: 0.1950 INCHES MINIMUM AND 0.2050 INCHES MAXIMUM IN, bore_diameter: 0.1560 INCHES MINIMUM AND 0.1590 INCHES MAXIMUM IN, overall_height: 0.2550 INCHES MINIMUM AND 0.2750 INCHES MAXIMUM IN, style_designator: SEAT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-786-6341, 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
367998R1
NSN: 5340-00-786-6341
FSC: 5340
CAGE: 31007 — NAVISTAR INTERNATIONAL CORPORATION DBA NAVISTAR (USA)
SPECIFICATIONS
materialSTEEL ALLOY
design_typeSOLID
end_diameter0.1950 INCHES MINIMUM AND 0.2050 INCHES MAXIMUM IN
bore_diameter0.1560 INCHES MINIMUM AND 0.1590 INCHES MAXIMUM IN
overall_height0.2550 INCHES MINIMUM AND 0.2750 INCHES MAXIMUM IN
style_designatorSEAT
first_step_diameter0.4950 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM IN
distance_from_end_to_first_step0.2150 INCHES MINIMUM AND 0.2250 INCHES MAXIMUM IN
material_document_and_classificationLEADED NITRALLOY,FSCM 87460 MFR REF SINGLE MATERIAL RESPONSE
NSN5340-00-786-6341
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 367998R1 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
KEY FEATURES
END DIAMETER: 0.1950 INCHES MINIMUM AND 0.2050 INCHES MAXIMUM IN
BORE DIAMETER: 0.1560 INCHES MINIMUM AND 0.1590 INCHES MAXIMUM IN
FIRST STEP DIAMETER: 0.4950 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM IN
DISTANCE FROM END TO FIRST STEP: 0.2150 INCHES MINIMUM AND 0.2250 INCHES MAXIMUM IN
DESIGN TYPE: SOLID
MATERIAL: STEEL ALLOY
STYLE DESIGNATOR: SEAT
TECHNICAL CHARACTERISTICS (FLIS)
END DIAMETER0.1950 INCHES MINIMUM AND 0.2050 INCHES MAXIMUM IN
OVERALL HEIGHT0.2550 INCHES MINIMUM AND 0.2750 INCHES MAXIMUM IN
BORE DIAMETER0.1560 INCHES MINIMUM AND 0.1590 INCHES MAXIMUM IN
FIRST STEP DIAMETER0.4950 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM IN
DISTANCE FROM END TO FIRST STEP0.2150 INCHES MINIMUM AND 0.2250 INCHES MAXIMUM IN
DESIGN TYPESOLID
MATERIALSTEEL ALLOY
STYLE DESIGNATORSEAT
MATERIAL DOCUMENT AND CLASSIFICATIONLEADED NITRALLOY,FSCM 87460 MFR REF SINGLE MATERIAL RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
2HD230Upgraded Successor
successor cross-reference
successor
11969Upgraded Successor
successor cross-reference
successor
7HB491Upgraded Successor
successor cross-reference
successor
SS1597Interchangeable
interchangeable cross-reference
interchangeable
697-4Interchangeable
interchangeable cross-reference
interchangeable
04450002-004Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 367998R1?
367998R1 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace 367998R1?
There are 25 known substitutes for 367998R1: 2HD230, 11969, 7HB491 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 367998R1?
367998R1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-786-6341. This indicates validated use in U.S. government and defense supply chains.
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