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Technical Data Sheet
6839A ✓ 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: LEATHER AND RUBBER SYNTHETIC SEALING ELEMENT, case_style: SQUARE, seal_width: 0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN, housing_bore_diameter: 7.750 INCHES NOMINAL IN, sealing_element_style: ANGULAR, accommodated_shaft_diameter: 6.438 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 5330-00-285-9453, 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
6839A
NSN: 5330-00-285-9453
FSC: 5330
CAGE: 28265 — HERCULES ENGINE CO INC (USA)
SPECIFICATIONS
materialLEATHER AND RUBBER SYNTHETIC SEALING ELEMENT
case_styleSQUARE
seal_width0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
housing_bore_diameter7.750 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter6.438 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN5330-00-285-9453
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6839A 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 CASE
CASE STYLE: SQUARE
ACCOMMODATED SHAFT DIAMETER: 6.438 INCHES NOMINAL IN
HOUSING BORE DIAMETER: 7.750 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
SEALING ELEMENT STYLE: ANGULAR
SEAL WIDTH: 0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CASE
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER6.438 INCHES NOMINAL IN
MATERIALLEATHER AND RUBBER SYNTHETIC SEALING ELEMENT
HOUSING BORE DIAMETER7.750 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
SEALING ELEMENT STYLEANGULAR
SEAL WIDTH0.219 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
49886Interchangeable
interchangeable cross-reference
interchangeable
9105Interchangeable
interchangeable cross-reference
interchangeable
86353AInterchangeable
interchangeable cross-reference
interchangeable
62063Interchangeable
interchangeable cross-reference
interchangeable
1TW8Interchangeable
interchangeable cross-reference
interchangeable
H90077A001PC12Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6839A?
6839A is a SEAL,PLAIN ENCASED.
What parts can replace 6839A?
There are 7 known substitutes for 6839A: 49886, 9105, 86353A and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6839A?
6839A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-285-9453. This indicates validated use in U.S. government and defense supply chains.
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