The Back-Up Ring,preformed Packing, cataloged under National Stock Number 5330-01-505-8024, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Trelleborg Sealing Solutions Us, Inc.. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5330-01-505-8024 |
| Primary Part Number | S33157-213-99 |
| Item Name | Back-Up Ring,preformed Packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Trelleborg Sealing Solutions Us, Inc. |
| Status | ACTIVE |
| Cross-Sectional Height | 0.052 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | SOLID |
| Peripheral Diameter | 1.155 INCHES MINIMUM AND 1.178 INCHES MAXIMUM IN |
| Center Hole Diameter | 0.935 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN |
| Material | PLASTIC |
| 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 |
|---|---|
| S33157-213-99 PRIMARY | Trelleborg Sealing Solutions Us, Inc. (USA) |
| BUS7-0-M213-A-T99 | Trelleborg Sealing Solutions Us, Inc. (USA) |
| Reference | Meaning |
|---|---|
| S33157-213-99 | 5/9 Secondary reference U.S. Government activity |
NSN 5330-01-505-8024 is a Back-Up Ring,preformed Packing, manufactured by Trelleborg Sealing Solutions Us, Inc., classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-505-8024 has 2 manufacturer part numbers on file: S33157-213-99 (Trelleborg Sealing Solutions Us, Inc.), BUS7-0-M213-A-T99 (Trelleborg Sealing Solutions Us, Inc.).
Key specifications for S33157-213-99: Cross-Sectional Height: 0.052 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN; Cross-Sectional Shape Style: SOLID; Peripheral Diameter: 1.155 INCHES MINIMUM AND 1.178 INCHES MAXIMUM IN; Center Hole Diameter: 0.935 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN. 5 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.