PartsTable
Technical Data Sheet
MS28775-025 ✓ 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, outside_diameter: 1.299 INCHES MINIMUM AND 1.333 INCHES MAXIMUM IN, center_hole_diameter: 1.170 INCHES MINIMUM AND 1.182 INCHES MAXIMUM IN, cross-sectional_height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN, end_item_identification: MULTIPLE LAUNCH ROCKET SYSTEM (MLRS); ARMORED MULTI-PURPOSE VEHICLE (AMPV). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-165-4539, 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
MS28775-025
NSN: 5330-00-165-4539
FSC: 5330
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
outside_diameter1.299 INCHES MINIMUM AND 1.333 INCHES MAXIMUM IN
center_hole_diameter1.170 INCHES MINIMUM AND 1.182 INCHES MAXIMUM IN
cross-sectional_height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
end_item_identificationMULTIPLE LAUNCH ROCKET SYSTEM (MLRS); ARMORED MULTI-PURPOSE VEHICLE (AMPV)
NSN5330-00-165-4539
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS28775-025 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: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
CRITICALITY CODE JUSTIFICATION: ZZZY
CENTER HOLE DIAMETER: 1.170 INCHES MINIMUM AND 1.182 INCHES MAXIMUM IN
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
ELONGATION PERCENTAGE: 160 MAXIMUM
PERIPHERAL DIAMETER: 1.316 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
TEMP RATING-65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
CRITICALITY CODE JUSTIFICATIONZZZY
CENTER HOLE DIAMETER1.170 INCHES MINIMUM AND 1.182 INCHES MAXIMUM IN
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
ELONGATION PERCENTAGE160 MAXIMUM
PERIPHERAL DIAMETER1.316 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
4400173-0250Interchangeable
interchangeable cross-reference
interchangeable
2-025 N304-75Interchangeable
interchangeable cross-reference
interchangeable
N304-75-25Interchangeable
interchangeable cross-reference
interchangeable
8723-0094Interchangeable
Same NIIN cross-reference
interchangeable
2443658200Interchangeable
Same NIIN cross-reference
interchangeable
D-2355PC9-1/4INInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS28775-025?
MS28775-025 is a O-RING.
What parts can replace MS28775-025?
There are 6 known substitutes for MS28775-025: 4400173-0250, 2-025 N304-75, N304-75-25 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS28775-025?
MS28775-025 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-165-4539. This indicates validated use in U.S. government and defense supply chains.
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