PartsTable
Technical Data Sheet
PartsTable / O-RING / 7339987-3
7339987-3 ✓ 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 O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, temp_rating: -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 3.115 INCHES MINIMUM AND 3.175 INCHES MAXIMUM IN, special_features: CAGE 81346 P/N ASTM-D2000-01-M3CH714A25B34E016E036 IS ITEM IDENTIFYING, center_hole_diameter: 2.705 INCHES MINIMUM AND 2.745 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-928-1823, 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
7339987-3
NSN: 5331-00-928-1823
FSC: 5331 — O-RING
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
temp_rating-30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
hardness_rating70.0 SHORE DUROMETER A NOMINAL
outside_diameter3.115 INCHES MINIMUM AND 3.175 INCHES MAXIMUM IN
special_featuresCAGE 81346 P/N ASTM-D2000-01-M3CH714A25B34E016E036 IS ITEM IDENTIFYING
center_hole_diameter2.705 INCHES MINIMUM AND 2.745 INCHES MAXIMUM IN
elongation_percentage331 MAXIMUM
cross-sectional_height0.205 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN
NSN5331-00-928-1823
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7339987-3 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: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
•
OUTSIDE DIAMETER: 3.115 INCHES MINIMUM AND 3.175 INCHES MAXIMUM IN
•
ELONGATION PERCENTAGE: 331 MAXIMUM
•
TEMP RATING: -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
CROSS-SECTIONAL HEIGHT: 0.205 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 2.705 INCHES MINIMUM AND 2.745 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
SPECIAL FEATURESCAGE 81346 P/N ASTM-D2000-01-M3CH714A25B34E016E036 IS ITEM IDENTIFYING
OUTSIDE DIAMETER3.115 INCHES MINIMUM AND 3.175 INCHES MAXIMUM IN
ELONGATION PERCENTAGE331 MAXIMUM
TEMP RATING-30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
CROSS-SECTIONAL HEIGHT0.205 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN
CENTER HOLE DIAMETER2.705 INCHES MINIMUM AND 2.745 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
GS570DG1Interchangeable
interchangeable cross-reference
interchangeable
742Interchangeable
interchangeable cross-reference
interchangeable
51G1300Interchangeable
interchangeable cross-reference
interchangeable
MMI-9998Interchangeable
interchangeable cross-reference
interchangeable
GS2386Interchangeable
interchangeable cross-reference
interchangeable
BRTG2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7339987-3?
7339987-3 is a O-RING.
What parts can replace 7339987-3?
There are 22 known substitutes for 7339987-3: GS570DG1, 742, 51G1300 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7339987-3?
7339987-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-928-1823. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026