The Gasket, cataloged under National Stock Number 5330-01-553-8763, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Howell Laboratories Inc Dba Howell Laboratories Inc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-553-8763 |
| Primary Part Number | 8571-01 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Howell Laboratories Inc Dba Howell Laboratories Inc |
| Status | ACTIVE |
| Cross-Sectional Thickness | 0.125 INCHES NOMINAL IN |
| Style Designator | CIRCULAR |
| Cross-Sectional Shape Style | SOLID SINGLE OR COMPOSITION |
| Outside Diameter | 4.250 INCHES NOMINAL IN |
| Aperture Diameter | 1.3125 INCHES NOMINAL IN |
| Bolt Hole Quantity | 4 |
| Bolt Circle Diameter | 3.125 INCHES NOMINAL IN |
| Material | RUBBER ETHYLENE-PROPYLENE-DIENE CLASS EPDM OVERALL |
| Hole Diameter | 0.625 INCHES NOMINAL 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 |
|---|---|
| 7869 ITEM 2 | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| 8571-01 PRIMARY | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| 7470-07 | 3/9 Design control — primary reference Howell Laboratories Inc Dba Howell Laboratories Inc |
NSN 5330-01-553-8763 is a Gasket, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-553-8763 has 2 manufacturer part numbers on file: 7869 ITEM 2 (Howell Laboratories Inc Dba Howell Laboratories Inc), 8571-01 (Howell Laboratories Inc Dba Howell Laboratories Inc).
Key specifications for 8571-01: Cross-Sectional Thickness: 0.125 INCHES NOMINAL IN; Style Designator: CIRCULAR; Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION; Outside Diameter: 4.250 INCHES NOMINAL IN. 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.