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E-71005 — BUMPER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

E-71005: BUMPER.

The BUMPER is a the manufacturer industrial component. Key specifications include material: RUBBER SILICONE, hole_diameter: 0.120 INCHES NOMINAL IN, overall_height: 0.230 INCHES NOMINAL IN, style_designator: FLAT TOP COUNTERBORED, first_counterbore_depth: 0.120 INCHES NOMINAL IN, first_counterbore_diameter: 0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-050-6350, 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
E-71005
NSN: 5340-01-050-6350
FSC: 5340 — Hardware, Commercial
CAGE: 77308 — PARCO, LLC (USA)
SPECIFICATIONS
materialRUBBER SILICONE
hole_diameter0.120 INCHES NOMINAL IN
overall_height0.230 INCHES NOMINAL IN
style_designatorFLAT TOP COUNTERBORED
first_counterbore_depth0.120 INCHES NOMINAL IN
first_counterbore_diameter0.250 INCHES NOMINAL IN
outside/top_flange_diameter0.500 INCHES NOMINAL IN
material_document_and_classificationZZ-R-765, CLASS 2B, GRADE 50 FED SPEC SINGLE MATERIAL RESPONSE
NSN5340-01-050-6350
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: E-71005 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
•
OUTSIDE/TOP FLANGE DIAMETER: 0.500 INCHES NOMINAL IN
•
FIRST COUNTERBORE DIAMETER: 0.250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT TOP COUNTERBORED
•
MATERIAL DOCUMENT AND CLASSIFICATION: ZZ-R-765, CLASS 2B, GRADE 50 FED SPEC SINGLE MATERIAL RESPONSE
•
FIRST COUNTERBORE DEPTH: 0.120 INCHES NOMINAL IN
•
MATERIAL: RUBBER SILICONE
•
HOLE DIAMETER: 0.120 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.230 INCHES NOMINAL IN
OUTSIDE/TOP FLANGE DIAMETER0.500 INCHES NOMINAL IN
FIRST COUNTERBORE DIAMETER0.250 INCHES NOMINAL IN
STYLE DESIGNATORFLAT TOP COUNTERBORED
MATERIAL DOCUMENT AND CLASSIFICATIONZZ-R-765, CLASS 2B, GRADE 50 FED SPEC SINGLE MATERIAL RESPONSE
FIRST COUNTERBORE DEPTH0.120 INCHES NOMINAL IN
MATERIALRUBBER SILICONE
HOLE DIAMETER0.120 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
903708-1CReference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
228551-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is E-71005?
E-71005 is a BUMPER.
What parts can replace E-71005?
There are 2 known substitutes for E-71005: 903708-1C, 228551-1. Substitute compatibility should be verified for your specific system.
What is the NSN for E-71005?
E-71005 is cataloged in the U.S. Government catalog under NSN 5340-01-050-6350. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.