The Gasket, cataloged under National Stock Number 5330-01-033-2722, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5330-01-033-2722 |
| Primary Part Number | 50509-4 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp |
| Status | ACTIVE |
| Gage Ring Thickness | 0.090 INCHES NOMINAL IN |
| Hardness Rating | 55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL |
| Material Document and Classification | QQ-A-250/11 TEMPER T6 FED SPEC 1ST MATERIAL RESPONSE AND MIL-R-6855 CL 1 GR 60 MIL SPEC 2ND MATERIAL RESPONSE OR QQ-A-250/11 TEMPER T6 FED SPEC 3RD MATERIAL RESPONSE AND MIL-R-6855 CL 2 GR 60 MIL SPEC 4TH MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | METAL AND SYNTHETIC RUBBER |
| Outside Diameter | 4.120 INCHES NOMINAL IN |
| Aperture Diameter | 2.312 INCHES NOMINAL IN |
| Bolt Hole Quantity | 5 |
| Material | ALUMINUM ALLOY 6061 AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR ALUMINUM ALLOY 6061 AND RUBBER CHLOROPRENE CLASS CR OVERALL |
| Hole Diameter | 0.279 INCHES MINIMUM AND 0.291 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN |
| 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 |
|---|---|
| 50509-4 PRIMARY | Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp (USA) |
| Reference | Meaning |
|---|---|
| A15PS433-4 | 7/2 Vendor item drawing reference The Boeing Company |
NSN 5330-01-033-2722 is a Gasket, manufactured by Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-033-2722 has 1 manufacturer part number on file: 50509-4 (Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp).
3 possible matches (shared part number, not a government interchangeability claim): 5305-01-097-7705, 2040-01-251-9483, 4220-01-693-7952. Verify interchangeability with system specifications before substitution.
Key specifications for 50509-4: Gage Ring Thickness: 0.090 INCHES NOMINAL IN; Hardness Rating: 55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL; Material Document and Classification: QQ-A-250/11 TEMPER T6 FED SPEC 1ST MATERIAL RESPONSE AND MIL-R-6855 CL 1 GR 60 MIL SPEC 2ND MATERIAL RESPONSE OR QQ-A-250/11 TEMPER T6 FED SPEC 3RD MATERIAL RESPONSE AND MIL-R-6855 CL 2 GR 60 MIL SPEC 4TH MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: METAL AND SYNTHETIC RUBBER. 9 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.