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Technical Data Sheet
PartsTable / COMPONENT / 12355-HMSA7
12355-HMSA7 ✓ 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: STEEL CORROSION RESISTING SPRING, seal_width: 0.376 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN, temp_rating: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF, construction: SOLID, outside_diameter: 1.759 INCHES NOMINAL IN, housing_bore_diameter: 1.752 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 5330-01-043-5272, 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
12355-HMSA7
NSN: 5330-01-043-5272
FSC: 5330
CAGE: 97578 — TIMKEN GEARS & SERVICES INC. DBA PHILADELPHIA GEAR DIV WESTERN REGIONAL SERVICE CENTER (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING SPRING
seal_width0.376 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
temp_rating-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
constructionSOLID
outside_diameter1.759 INCHES NOMINAL IN
housing_bore_diameter1.752 INCHES NOMINAL IN
accommodated_shaft_diameter1.250 INCHES NOMINAL IN
cross-sectional_shape_styleDUAL LIP
NSN5330-01-043-5272
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12355-HMSA7 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
•
MATERIAL: STEEL CORROSION RESISTING SPRING
•
HOUSING BORE DIAMETER: 1.752 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: DUAL LIP
•
TEMP RATING: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
•
CONSTRUCTION: SOLID
•
OUTSIDE DIAMETER: 1.759 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT DIAMETER: 1.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CORROSION RESISTING SPRING
HOUSING BORE DIAMETER1.752 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEDUAL LIP
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
TEMP RATING-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
CONSTRUCTIONSOLID
OUTSIDE DIAMETER1.759 INCHES NOMINAL IN
ACCOMMODATED SHAFT DIAMETER1.250 INCHES NOMINAL IN
SEAL WIDTH0.376 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
12355Interchangeable
interchangeable cross-reference
interchangeable
04056686006467Interchangeable
interchangeable cross-reference
interchangeable
123-0055Interchangeable
interchangeable cross-reference
interchangeable
2030342Interchangeable
interchangeable cross-reference
interchangeable
8B8096Interchangeable
interchangeable cross-reference
interchangeable
10057Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12355-HMSA7?
12355-HMSA7 is a SEAL,PLAIN.
What parts can replace 12355-HMSA7?
There are 12 known substitutes for 12355-HMSA7: 12355, 04056686006467, 123-0055 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12355-HMSA7?
12355-HMSA7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-043-5272. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026