PartsTable
Technical Data Sheet
99018-55 ✓ 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, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 7.512 INCHES NOMINAL IN, center_hole_diameter: 7.204 INCHES MINIMUM AND 7.264 INCHES MAXIMUM IN, elongation_percentage: 150 MAXIMUM, cross-sectional_height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-290-9390, 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
99018-55
NSN: 5331-00-290-9390
FSC: 5331 — O-RING
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
hardness_rating70.0 SHORE DUROMETER A NOMINAL
outside_diameter7.512 INCHES NOMINAL IN
center_hole_diameter7.204 INCHES MINIMUM AND 7.264 INCHES MAXIMUM IN
elongation_percentage150 MAXIMUM
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
NSN5331-00-290-9390
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 99018-55 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
ELONGATION PERCENTAGE: 150 MAXIMUM
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
OUTSIDE DIAMETER: 7.512 INCHES NOMINAL IN
CENTER HOLE DIAMETER: 7.204 INCHES MINIMUM AND 7.264 INCHES MAXIMUM IN
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
ELONGATION PERCENTAGE150 MAXIMUM
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
OUTSIDE DIAMETER7.512 INCHES NOMINAL IN
CENTER HOLE DIAMETER7.204 INCHES MINIMUM AND 7.264 INCHES MAXIMUM IN
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
36010Interchangeable
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JK38Interchangeable
interchangeable cross-reference
interchangeable
SCD1457MInterchangeable
interchangeable cross-reference
interchangeable
3041T37P01Interchangeable
interchangeable cross-reference
interchangeable
543041Interchangeable
interchangeable cross-reference
interchangeable
36.010Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 99018-55?
99018-55 is a O-RING.
What parts can replace 99018-55?
There are 16 known substitutes for 99018-55: 36010, JK38, SCD1457M and 13 more. Substitute compatibility should be verified for your specific system.
Is 99018-55 still available?
99018-55 is currently cancelled.
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