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Technical Data Sheet
990185 ✓ 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 KIT is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 2.762 INCHES NOMINAL IN, center_hole_diameter: 2.474 INCHES MINIMUM AND 2.494 INCHES MAXIMUM IN, cross-sectional_height: 0.135 INCHES MINIMUM AND 0.143 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 5331-00-527-9232, 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
990185
NSN: 5331-00-527-9232
FSC: 5331 — O-RING
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
hardness_rating70.0 SHORE DUROMETER A NOMINAL
outside_diameter2.762 INCHES NOMINAL IN
center_hole_diameter2.474 INCHES MINIMUM AND 2.494 INCHES MAXIMUM IN
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
NSN5331-00-527-9232
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 990185 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
CENTER HOLE DIAMETER: 2.474 INCHES MINIMUM AND 2.494 INCHES MAXIMUM IN
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
OUTSIDE DIAMETER: 2.762 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER2.474 INCHES MINIMUM AND 2.494 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
OUTSIDE DIAMETER2.762 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
990185Interchangeable
interchangeable cross-reference
interchangeable
995243Interchangeable
interchangeable cross-reference
interchangeable
26513Interchangeable
interchangeable cross-reference
interchangeable
78321Interchangeable
interchangeable cross-reference
interchangeable
54308Interchangeable
interchangeable cross-reference
interchangeable
36008Interchangeable
Premium Services Plan f/ PX12R-350R, 1TB Kit, 3Y, 4h, 24x7
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 990185?
990185 is a SEAL KIT.
What parts can replace 990185?
There are 15 known substitutes for 990185: 990185, 995243, 26513 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 990185?
990185 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-527-9232. This indicates validated use in U.S. government and defense supply chains.
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