The Gasket, cataloged under National Stock Number 5330-00-990-3181, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Basf Catalysts Llc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-00-990-3181 |
| Primary Part Number | B1333 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Basf Catalysts Llc |
| Status | ACTIVE |
| Cross-Sectional Thickness | 0.125 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN |
| Hardness Rating | 50.0 SHORE DUROMETER A NOMINAL OVERALL |
| Style Designator | CIRCULAR |
| Cross-Sectional Shape Style | SOLID SINGLE OR COMPOSITION |
| Outside Diameter | 9.094 INCHES MINIMUM AND 9.156 INCHES MAXIMUM IN |
| Aperture Diameter | 8.344 INCHES MINIMUM AND 8.406 INCHES MAXIMUM IN |
| Material | RUBBER CHLOROPRENE CLASS CR OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| B1333 PRIMARY | Basf Catalysts Llc (USA) |
NSN 5330-00-990-3181 is a Gasket, manufactured by Basf Catalysts Llc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-990-3181 has 1 manufacturer part number on file: B1333 (Basf Catalysts Llc).
2 possible matches (shared part number, not a government interchangeability claim): 3020-01-168-9484, 5915-01-565-8955. Verify interchangeability with system specifications before substitution.
Key specifications for B1333: Cross-Sectional Thickness: 0.125 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN; Hardness Rating: 50.0 SHORE DUROMETER A NOMINAL OVERALL; Style Designator: CIRCULAR; Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION. 7 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.