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Technical Data Sheet
PartsTable / O-RING / MS28775-238
MS28775-238 ✓ 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: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF, outside_diameter: 3.762 INCHES NOMINAL IN, center_hole_diameter: 3.469 INCHES MINIMUM AND 3.499 INCHES MAXIMUM IN, elongation_percentage: 160 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 5331-00-579-7545, 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
MS28775-238
NSN: 5331-00-579-7545
FSC: 5331 — O-RING
CAGE: 11859 — HUNT VALVE COMPANY, INC. (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
temp_rating-65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
outside_diameter3.762 INCHES NOMINAL IN
center_hole_diameter3.469 INCHES MINIMUM AND 3.499 INCHES MAXIMUM IN
elongation_percentage160 MAXIMUM
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
criticality_code_justificationADYT
NSN5331-00-579-7545
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS28775-238 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
•
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
•
OUTSIDE DIAMETER: 3.730 INCHES MINIMUM AND 3.794 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 3.469 INCHES MINIMUM AND 3.499 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
OUTSIDE DIAMETER3.730 INCHES MINIMUM AND 3.794 INCHES MAXIMUM IN
CENTER HOLE DIAMETER3.469 INCHES MINIMUM AND 3.499 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
S5901H1297870ITEM190Interchangeable
interchangeable cross-reference
interchangeable
CV34S5501-364459PC27EInterchangeable
interchangeable cross-reference
interchangeable
N304-7-B16Interchangeable
interchangeable cross-reference
interchangeable
F600L04146Interchangeable
interchangeable cross-reference
interchangeable
50238Interchangeable
interchangeable cross-reference
interchangeable
F600L4146Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS28775-238?
MS28775-238 is a O-RING.
What parts can replace MS28775-238?
There are 30 known substitutes for MS28775-238: S5901H1297870ITEM190, CV34S5501-364459PC27E, N304-7-B16 and 27 more. Substitute compatibility should be verified for your specific system.
Is MS28775-238 still available?
MS28775-238 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026