PartsTable
Technical Data Sheet
PartsTable / COMPONENT / J1-78
J1-78 ✓ 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 SEAL,PLAIN ENCASED is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-528-3250, 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
J1-78
NSN: 5330-00-528-3250
FSC: 5330
CAGE: 08018 — BORG-WARNER CORP (USA)
SPECIFICATIONS
Part NumberJ1-78
NSN5330-00-528-3250
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: J1-78 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
•
ACCOMMODATED SHAFT DIAMETER: 0.554 INCHES MINIMUM AND 0.559 INCHES MAXIMUM IN
•
HOUSING BORE DIAMETER: 0.812 INCHES MINIMUM AND 0.816 INCHES MAXIMUM IN
•
MATERIAL: RUBBER SYNTHETIC SEALING ELEMENT
•
SEAL WIDTH: 0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT DIAMETER0.554 INCHES MINIMUM AND 0.559 INCHES MAXIMUM IN
HOUSING BORE DIAMETER0.812 INCHES MINIMUM AND 0.816 INCHES MAXIMUM IN
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
MATERIALSTEEL CASE
SEAL WIDTH0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
J17Interchangeable
interchangeable cross-reference
interchangeable
J71-47Interchangeable
interchangeable cross-reference
interchangeable
C5AGQ13Interchangeable
interchangeable cross-reference
interchangeable
J178Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy J1-78?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is J1-78?
J1-78 is a SEAL,PLAIN ENCASED.
What parts can replace J1-78?
There are 4 known substitutes for J1-78: J17, J71-47, C5AGQ13 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for J1-78?
J1-78 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-528-3250. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — J1-78

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026