PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 77HE3
77HE3 ✓ 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

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: STEEL, design_type: FRICTION, round_cap_outside_surface_condition: SMOOTH, material_document_and_classification: FED-STD-66, COMP 1050 FED STD SINGLE MATERIAL RESPONSE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-499-9165, 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
77HE3
NSN: 5340-00-499-9165
FSC: 5340
CAGE: 89749 — CLARK MATERIAL HANDLING COMPANY (USA)
SPECIFICATIONS
materialSTEEL
design_typeFRICTION
round_cap_outside_surface_conditionSMOOTH
material_document_and_classificationFED-STD-66, COMP 1050 FED STD SINGLE MATERIAL RESPONSE
NSN5340-00-499-9165
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 77HE3 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
•
MATERIAL: STEEL
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED-STD-66, COMP 1050 FED STD SINGLE MATERIAL RESPONSE
•
DESIGN TYPE: FRICTION
•
ROUND CAP OUTSIDE SURFACE CONDITION: SMOOTH
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL
MATERIAL DOCUMENT AND CLASSIFICATIONFED-STD-66, COMP 1050 FED STD SINGLE MATERIAL RESPONSE
DESIGN TYPEFRICTION
ROUND CAP OUTSIDE SURFACE CONDITIONSMOOTH
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
100320Interchangeable
interchangeable cross-reference
interchangeable
CRS13G126KPInterchangeable
interchangeable cross-reference
interchangeable
356-0042Interchangeable
interchangeable cross-reference
interchangeable
MIL-E-16366Interchangeable
interchangeable cross-reference
interchangeable
321147Interchangeable
interchangeable cross-reference
interchangeable
MS21003-20Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 77HE3?
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 77HE3?
77HE3 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace 77HE3?
There are 13 known substitutes for 77HE3: 100320, CRS13G126KP, 356-0042 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 77HE3?
77HE3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-499-9165. 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 — 77HE3

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