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Technical Data Sheet
PartsTable / COMPONENT / 1K6981
1K6981 ✓ 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 color: BLACK, material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT, case_style: SQUARE, seal_width: 0.375 INCHES NOMINAL IN, temp_rating: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF, hardness_rating: 80.0 SHORE DUROMETER A NOMINAL OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-290-1012, 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
1K6981
NSN: 5330-00-290-1012
FSC: 5330
CAGE: F1935 — INTERXION REAL ESTATE XX (FRA)
SPECIFICATIONS
colorBLACK
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
case_styleSQUARE
seal_width0.375 INCHES NOMINAL IN
temp_rating-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF
hardness_rating80.0 SHORE DUROMETER A NOMINAL OVERALL
outside_diameter2.690 INCHES NOMINAL IN
surface_treatmentPLASTIC CASE
housing_bore_diameter2.686 INCHES NOMINAL IN
sealing_element_styleANGULAR
maximum_pressure_rating7.0 POUNDS PER SQUARE INCH (PSI) LBS
accommodated_shaft_diameter2.000 INCHES NOMINAL IN
NSN5330-00-290-1012
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1K6981 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: 2.000 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 2.690 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
MATERIAL: LEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
•
SURFACE TREATMENT: PLASTIC CASE
•
SEAL WIDTH: 0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
•
HOUSING BORE DIAMETER: 2.686 INCHES NOMINAL IN
•
CASE STYLE: SQUARE
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT DIAMETER2.000 INCHES NOMINAL IN
OUTSIDE DIAMETER2.690 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
MATERIALLEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
SURFACE TREATMENTPLASTIC CASE
SEAL WIDTH0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
HOUSING BORE DIAMETER2.686 INCHES NOMINAL IN
CASE STYLESQUARE
SEALING ELEMENT STYLEANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
19778Interchangeable
interchangeable cross-reference
interchangeable
1K6981Interchangeable
interchangeable cross-reference
interchangeable
00044Interchangeable
interchangeable cross-reference
interchangeable
21158-1186Interchangeable
interchangeable cross-reference
interchangeable
19653Interchangeable
interchangeable cross-reference
interchangeable
214Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1K6981?
1K6981 is a SEAL,PLAIN ENCASED.
What parts can replace 1K6981?
There are 16 known substitutes for 1K6981: 19778, 1K6981, 00044 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1K6981?
1K6981 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-290-1012. This indicates validated use in U.S. government and defense supply chains.
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Last verified: July 2026