PartsTable
Technical Data Sheet
MS28778-20CP ✓ 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 PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC OVERALL, temp_rating: -65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF, hardness_rating: 90.0 SHORE DUROMETER A NOMINAL OVERALL, peripheral_diameter: 1.711 INCHES NOMINAL IN, center_hole_diameter: 1.465 INCHES MINIMUM AND 1.485 INCHES MAXIMUM IN, elongation_percentage: 80 MAXIMUM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-922-5947, 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
MS28778-20CP
NSN: 5330-00-922-5947
FSC: 5330
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
temp_rating-65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF
hardness_rating90.0 SHORE DUROMETER A NOMINAL OVERALL
peripheral_diameter1.711 INCHES NOMINAL IN
center_hole_diameter1.465 INCHES MINIMUM AND 1.485 INCHES MAXIMUM IN
elongation_percentage80 MAXIMUM
cross-sectional_height0.114 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
NSN5330-00-922-5947
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS28778-20CP 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
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
MATERIAL: RUBBER SYNTHETIC OVERALL
HARDNESS RATING: 90.0 SHORE DUROMETER A NOMINAL OVERALL
CROSS-SECTIONAL HEIGHT: 0.114 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN
ELONGATION PERCENTAGE: 80 MAXIMUM
CRITICALITY CODE JUSTIFICATION: ZZZY
PERIPHERAL DIAMETER: 1.711 INCHES NOMINAL IN
CENTER HOLE DIAMETER: 1.465 INCHES MINIMUM AND 1.485 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
MATERIALRUBBER SYNTHETIC OVERALL
HARDNESS RATING90.0 SHORE DUROMETER A NOMINAL OVERALL
CROSS-SECTIONAL HEIGHT0.114 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN
ELONGATION PERCENTAGE80 MAXIMUM
CRITICALITY CODE JUSTIFICATIONZZZY
PERIPHERAL DIAMETER1.711 INCHES NOMINAL IN
CENTER HOLE DIAMETER1.465 INCHES MINIMUM AND 1.485 INCHES MAXIMUM IN
TEMP RATING-65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
5330008037208Interchangeable
interchangeable cross-reference
interchangeable
GHN10093-4Interchangeable
interchangeable cross-reference
interchangeable
19A11C02Interchangeable
interchangeable cross-reference
interchangeable
25-2859YPCAN629020Interchangeable
interchangeable cross-reference
interchangeable
M383-20Interchangeable
interchangeable cross-reference
interchangeable
10596841-13Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS28778-20CP?
MS28778-20CP is a PACKING,PREFORMED.
What parts can replace MS28778-20CP?
There are 11 known substitutes for MS28778-20CP: 5330008037208, GHN10093-4, 19A11C02 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS28778-20CP?
MS28778-20CP is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-922-5947. This indicates validated use in U.S. government and defense supply chains.
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