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Technical Data Sheet
PartsTable / COMPONENT / 722778
722778 ✓ 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: 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN, temp_rating: -40.0 FAHRENHEIT AND 120.0 FAHRENHEIT DEGF, outside_diameter: 4.130 INCHES NOMINAL IN, housing_bore_diameter: 4.128 INCHES MINIMUM AND 4.132 INCHES MAXIMUM 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 5330-01-097-8236, 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
722778
NSN: 5330-01-097-8236
FSC: 5330
CAGE: 10110 — SCIENTIFIC ATLANTA INC (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
case_styleSQUARE
seal_width0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
temp_rating-40.0 FAHRENHEIT AND 120.0 FAHRENHEIT DEGF
outside_diameter4.130 INCHES NOMINAL IN
housing_bore_diameter4.128 INCHES MINIMUM AND 4.132 INCHES MAXIMUM IN
sealing_element_styleANGULAR
accommodated_shaft_diameter3.125 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed69 FEET PER MINUTE FT
NSN5330-01-097-8236
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 722778 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 DIAMETER: 3.125 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 4.128 INCHES MINIMUM AND 4.132 INCHES MAXIMUM IN
•
SEALING ELEMENT STYLE: ANGULAR
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
•
TEMP RATING: -40.0 FAHRENHEIT AND 120.0 FAHRENHEIT DEGF
•
CASE STYLE: SQUARE
•
SEAL WIDTH: 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 69 FEET PER MINUTE FT
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT DIAMETER3.125 INCHES NOMINAL IN
HOUSING BORE DIAMETER4.128 INCHES MINIMUM AND 4.132 INCHES MAXIMUM IN
SEALING ELEMENT STYLEANGULAR
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
TEMP RATING-40.0 FAHRENHEIT AND 120.0 FAHRENHEIT DEGF
CASE STYLESQUARE
SEAL WIDTH0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED69 FEET PER MINUTE FT
OUTSIDE DIAMETER4.130 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
31-192Interchangeable
interchangeable cross-reference
interchangeable
G335469Interchangeable
interchangeable cross-reference
interchangeable
KS14530Interchangeable
interchangeable cross-reference
interchangeable
458453Interchangeable
interchangeable cross-reference
interchangeable
438453Interchangeable
interchangeable cross-reference
interchangeable
493128-1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 722778?
722778 is a SEAL,PLAIN ENCASED.
What parts can replace 722778?
There are 6 known substitutes for 722778: 31-192, G335469, KS14530 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 722778?
722778 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-097-8236. 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