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Technical Data Sheet
6879H ✓ 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 SYNTHETIC SEALING ELEMENT, seal_width: 0.400 INCHES NOMINAL IN, temp_rating: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF, construction: SOLID, housing_bore_diameter: 2.875 INCHES NOMINAL IN, accommodated_shaft_diameter: 2.125 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 5330-00-116-5236, 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
6879H
NSN: 5330-00-116-5236
FSC: 5330
CAGE: 01212 — FEDERAL-MOGUL CORP GOVERNMENT SALES DEPT (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEALING ELEMENT
seal_width0.400 INCHES NOMINAL IN
temp_rating-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
constructionSOLID
housing_bore_diameter2.875 INCHES NOMINAL IN
accommodated_shaft_diameter2.125 INCHES NOMINAL IN
cross-sectional_shape_styleSINGLE LIP
NSN5330-00-116-5236
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6879H 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 INTERNALLY MOLDED-IN REINFORCEMENT
CROSS-SECTIONAL SHAPE STYLE: SINGLE LIP
SEAL WIDTH: 0.400 INCHES NOMINAL IN
CONSTRUCTION: SOLID
ACCOMMODATED SHAFT DIAMETER: 2.125 INCHES NOMINAL IN
HOUSING BORE DIAMETER: 2.875 INCHES NOMINAL IN
TEMP RATING: -65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL INTERNALLY MOLDED-IN REINFORCEMENT
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
CROSS-SECTIONAL SHAPE STYLESINGLE LIP
SEAL WIDTH0.400 INCHES NOMINAL IN
CONSTRUCTIONSOLID
ACCOMMODATED SHAFT DIAMETER2.125 INCHES NOMINAL IN
HOUSING BORE DIAMETER2.875 INCHES NOMINAL IN
TEMP RATING-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
21-120Interchangeable
interchangeable cross-reference
interchangeable
95-0388Interchangeable
interchangeable cross-reference
interchangeable
830303Interchangeable
interchangeable cross-reference
interchangeable
21-110Interchangeable
interchangeable cross-reference
interchangeable
S11K2Interchangeable
interchangeable cross-reference
interchangeable
S11RInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6879H?
6879H is a SEAL,PLAIN.
What parts can replace 6879H?
There are 20 known substitutes for 6879H: 21-120, 95-0388, 830303 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6879H?
6879H is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-116-5236. This indicates validated use in U.S. government and defense supply chains.
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