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Technical Data Sheet
PartsTable / COMPONENT / 10278 ITEM 48
10278 ITEM 48 ✓ 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,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT, case_style: SQUARE, seal_width: 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN, temp_rating: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF, outside_diameter: 8.507 INCHES NOMINAL IN, housing_bore_diameter: 8.000 INCHES NOMINAL 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 5330-01-124-6640, 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
10278 ITEM 48
NSN: 5330-01-124-6640
FSC: 5330
CAGE: 59594 — ENGINEERING INC (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
case_styleSQUARE
seal_width0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
temp_rating-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
outside_diameter8.507 INCHES NOMINAL IN
housing_bore_diameter8.000 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter6.500 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed3600 FEET PER MINUTE FT
NSN5330-01-124-6640
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 10278 ITEM 48 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
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 3600 FEET PER MINUTE FT
•
TEMP RATING: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
•
OUTSIDE DIAMETER: 8.507 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: ANGULAR
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
•
SEAL WIDTH: 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
•
HOUSING BORE DIAMETER: 8.000 INCHES NOMINAL IN
•
CASE STYLE: SQUARE
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT MAXIMUM RATED SPEED3600 FEET PER MINUTE FT
TEMP RATING-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
OUTSIDE DIAMETER8.507 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
SEAL WIDTH0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
HOUSING BORE DIAMETER8.000 INCHES NOMINAL IN
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER6.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
75030Interchangeable
interchangeable cross-reference
interchangeable
10015894-007Interchangeable
interchangeable cross-reference
interchangeable
GGG-B-101Interchangeable
interchangeable cross-reference
interchangeable
55-130Interchangeable
interchangeable cross-reference
interchangeable
1362560Interchangeable
interchangeable cross-reference
interchangeable
SAFETSERVInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10278 ITEM 48?
10278 ITEM 48 is a SEAL,PLAIN ENCASED.
What parts can replace 10278 ITEM 48?
There are 14 known substitutes for 10278 ITEM 48: 75030, 10015894-007, GGG-B-101 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10278 ITEM 48?
10278 ITEM 48 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-124-6640. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026