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5681-AV9B — PACKING,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5681-AV9B: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER FLUOROCARBON CLASS FPM OVERALL, temp_rating: -30.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF, hardness_rating: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL, peripheral_diameter: 26.302 INCHES NOMINAL IN, center_hole_diameter: 25.624 INCHES MINIMUM AND 26.000 INCHES MAXIMUM IN, cross-sectional_height: 0.210 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-918-4146, 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
5681-AV9B
NSN: 5330-00-918-4146
FSC: 5330 — Packing and Gasket Materials
CAGE: 24664 — JONAL LABORATORIES INC (USA)
SPECIFICATIONS
materialRUBBER FLUOROCARBON CLASS FPM OVERALL
temp_rating-30.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF
hardness_rating70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL
peripheral_diameter26.302 INCHES NOMINAL IN
center_hole_diameter25.624 INCHES MINIMUM AND 26.000 INCHES MAXIMUM IN
cross-sectional_height0.210 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN
cross-sectional_shape_styleU
material_document_and_classificationMIL-R-83248 TY 2,CL 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-918-4146
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5681-AV9B 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
•
TEMP RATING: -30.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.210 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-83248 TY 2,CL 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: U
•
PERIPHERAL DIAMETER: 26.302 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 25.624 INCHES MINIMUM AND 26.000 INCHES MAXIMUM IN
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM OVERALL
TECHNICAL CHARACTERISTICS
TEMP RATING-30.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.210 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN
HARDNESS RATING70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-83248 TY 2,CL 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLEU
PERIPHERAL DIAMETER26.302 INCHES NOMINAL IN
CENTER HOLE DIAMETER25.624 INCHES MINIMUM AND 26.000 INCHES MAXIMUM IN
MATERIALRUBBER FLUOROCARBON CLASS FPM OVERALL
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 1
10175784Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5681-AV9B?
5681-AV9B is a PACKING,PREFORMED.
What parts can replace 5681-AV9B?
There is 1 known substitute for 5681-AV9B: 10175784. Substitute compatibility should be verified for your specific system.
What is the NSN for 5681-AV9B?
5681-AV9B is cataloged in the U.S. Government catalog under NSN 5330-00-918-4146. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.