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12260SS ✓ 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 is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT, seal_width: 0.360 INCHES NOMINAL IN, temp_rating: -20.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF, construction: SOLID, housing_bore_diameter: 6.500 INCHES NOMINAL IN, accommodated_shaft_diameter: 5.425 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 5330-00-422-1599, 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
12260SS
NSN: 5330-00-422-1599
FSC: 5330
CAGE: 75165 — JOHNS MANVILLE INTL (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
seal_width0.360 INCHES NOMINAL IN
temp_rating-20.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
constructionSOLID
housing_bore_diameter6.500 INCHES NOMINAL IN
accommodated_shaft_diameter5.425 INCHES NOMINAL IN
cross-sectional_shape_styleSINGLE LIP
material_document_and_classificationMIL-R-15624 MIL SPEC SINGLE MATERIAL RESPONSE SEALING ELEMENT
NSN5330-00-422-1599
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12260SS 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: 5.425 INCHES NOMINAL IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-15624 MIL SPEC SINGLE MATERIAL RESPONSE SEALING ELEMENT
•
CROSS-SECTIONAL SHAPE STYLE: SINGLE LIP
•
HOUSING BORE DIAMETER: 6.500 INCHES NOMINAL IN
•
CONSTRUCTION: SOLID
•
TEMP RATING: -20.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
•
SEAL WIDTH: 0.360 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT DIAMETER5.425 INCHES NOMINAL IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-15624 MIL SPEC SINGLE MATERIAL RESPONSE SEALING ELEMENT
CROSS-SECTIONAL SHAPE STYLESINGLE LIP
HOUSING BORE DIAMETER6.500 INCHES NOMINAL IN
CONSTRUCTIONSOLID
TEMP RATING-20.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
SEAL WIDTH0.360 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
12-260Interchangeable
interchangeable cross-reference
interchangeable
205181-12Interchangeable
interchangeable cross-reference
interchangeable
NGX18609-3Interchangeable
interchangeable cross-reference
interchangeable
B94.11MInterchangeable
interchangeable cross-reference
interchangeable
2012-T 60Interchangeable
interchangeable cross-reference
interchangeable
503-S 60Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12260SS?
12260SS is a SEAL,PLAIN.
What parts can replace 12260SS?
There are 14 known substitutes for 12260SS: 12-260, 205181-12, NGX18609-3 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12260SS?
12260SS is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-422-1599. 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