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8681-114-620 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

8681-114-620: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL, outside_diameter: 4.250 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 3.781 INCHES NOMINAL IN, end_item_identification: 2-IN BOLTED BONNET CAST GATE VALVE, cross-sectional_thickness: 0.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-522-6430, 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
8681-114-620
NSN: 5330-01-522-6430
FSC: 5330 — Packing and Gasket Materials
CAGE: 57574 — VELAN VALVE CORP. (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
outside_diameter4.250 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter3.781 INCHES NOMINAL IN
end_item_identification2-IN BOLTED BONNET CAST GATE VALVE
cross-sectional_thickness0.125 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationAMS-C-6183 TY-1, CL-1. GRADE C BUNA-N -- VELAN MATERIAL CODE 620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyBONNET GASKET
NSN5330-01-522-6430
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 8681-114-620 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
•
CROSS-SECTIONAL THICKNESS: 0.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS-C-6183 TY-1, CL-1. GRADE C BUNA-N -- VELAN MATERIAL CODE 620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
OUTSIDE DIAMETER: 4.250 INCHES NOMINAL IN
•
APERTURE DIAMETER: 3.781 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.125 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONAMS-C-6183 TY-1, CL-1. GRADE C BUNA-N -- VELAN MATERIAL CODE 620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OUTSIDE DIAMETER4.250 INCHES NOMINAL IN
APERTURE DIAMETER3.781 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYBONNET GASKET
END ITEM IDENTIFICATION2-IN BOLTED BONNET CAST GATE VALVE
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR 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 2
8681-752 PN 8681-114-620Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
83309-41 PN 19, 8681-114-620Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8681-114-620?
8681-114-620 is a GASKET.
What parts can replace 8681-114-620?
There are 2 known substitutes for 8681-114-620: 8681-752 PN 8681-114-620, 83309-41 PN 19, 8681-114-620. Substitute compatibility should be verified for your specific system.
What is the NSN for 8681-114-620?
8681-114-620 is cataloged in the U.S. Government catalog under NSN 5330-01-522-6430. 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.