PartsTable
Technical Data Sheet
Download PDF

AS3085-021 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

AS3085-021: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM, temp_rating: -5.0 CELSIUS AND 205.0 CELSIUS DEGC, hardness_rating: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM, special_features: O-RING SHAPE;OPERATED BY FLUID, HIGH TEMPERATURE, center_hole_diameter: 0.917 INCHES MINIMUM AND 0.935 INCHES MAXIMUM IN, cross-sectional_height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-277-6590, 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
AS3085-021
NSN: 5331-01-277-6590
NIINs: 012776590, 014640552
FSC: 5331 — O-ring
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialRUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM
temp_rating-5.0 CELSIUS AND 205.0 CELSIUS DEGC
hardness_rating70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM
special_featuresO-RING SHAPE;OPERATED BY FLUID, HIGH TEMPERATURE
center_hole_diameter0.917 INCHES MINIMUM AND 0.935 INCHES MAXIMUM IN
cross-sectional_height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
end_item_identification2840-99-645-9394;2840-99-645-9395;2840-99-766-0507;2840-99-766-0508;MODEL RB199MK101/103/104
material_document_and_classificationAMS7280 ASSN STD SINGLE MATERIAL RESPONSE OR ASTMD2000/SAE J200 ASSN STD SINGLE MATERIAL RESPONSE
reference_number_differentiating_characteristicsAS DIFF BY SPEC K2617 HTE7300 PERFORMANCE RQMT TORNADO ACFT ENGINE MODEL RB199
NSN5331-01-277-6590
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS3085-021 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
•
TEMP RATING: -5.0 CELSIUS AND 205.0 CELSIUS DEGC
•
CROSS-SECTIONAL HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS7280 ASSN STD SINGLE MATERIAL RESPONSE OR ASTMD2000/SAE J200 ASSN STD SINGLE MATERIAL RESPONSE
•
COLOR: BROWN
•
CENTER HOLE DIAMETER: 0.917 INCHES MINIMUM AND 0.935 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
TEMP RATING-5.0 CELSIUS AND 205.0 CELSIUS DEGC
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
HARDNESS RATING70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS7280 ASSN STD SINGLE MATERIAL RESPONSE OR ASTMD2000/SAE J200 ASSN STD SINGLE MATERIAL RESPONSE
COLORBROWN
SPECIAL FEATURESO-RING SHAPE;OPERATED BY FLUID, HIGH TEMPERATURE
CENTER HOLE DIAMETER0.917 INCHES MINIMUM AND 0.935 INCHES MAXIMUM IN
END ITEM IDENTIFICATION2840-99-645-9394;2840-99-645-9395;2840-99-766-0507;2840-99-766-0508;MODEL RB199MK101/103/104
MATERIALRUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSAS DIFF BY SPEC K2617 HTE7300 PERFORMANCE RQMT TORNADO ACFT ENGINE MODEL RB199
SUBSTITUTES & CROSS-REFERENCES 4
AS3085-21Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
V0747 2-021Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
2-021 V747-75Reference document
Same NSN cross-reference
Reference document — Secondary reference
6823354-21Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy AS3085-021?
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 AS3085-021?
AS3085-021 is a O-RING.
What parts can replace AS3085-021?
There are 4 known substitutes for AS3085-021: AS3085-21, V0747 2-021, 2-021 V747-75 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS3085-021?
AS3085-021 is cataloged in the U.S. Government catalog under NSN 5331-01-277-6590. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — AS3085-021

✓ 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.