The Back-Up Ring,preformed Packing, cataloged under National Stock Number 5330-01-589-6888, 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 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5330-01-589-6888 |
| Primary Part Number | BACR12BM223 |
| 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 | 0.118 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN |
| Material Document and Classification | BMS8-121, TYPE 1, CLASS 1, GRADE B MFR REF SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | SINGLE TURN SPIRAL |
| Center Hole Diameter | 1.624 INCHES MINIMUM AND 1.626 INCHES MAXIMUM IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE |
| 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 |
|---|---|
| BACR12BM223 | Trelleborg Sealing Solutions Us, Inc. (USA) |
| BACR12BM223 | Boeing Defence Australia Ltd (AUS) |
| BACR12BM223 | Trelleborg Sealing Solutions El Segundo, Inc. Dba Tss El Segundo (USA) |
| BACR12BM223 | Coronado Manufacturing, Inc. (USA) |
| Reference | Meaning |
|---|---|
| BACR12BM223 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5330-01-589-6888 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 5330-01-589-6888 has 4 manufacturer part numbers on file: BACR12BM223 (Trelleborg Sealing Solutions Us, Inc.), BACR12BM223 (Boeing Defence Australia Ltd), BACR12BM223 (Trelleborg Sealing Solutions El Segundo, Inc. Dba Tss El Segundo), BACR12BM223 (Coronado Manufacturing, Inc.).
Key specifications for BACR12BM223: Cross-Sectional Height: 0.118 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN; Material Document and Classification: BMS8-121, TYPE 1, CLASS 1, GRADE B MFR REF SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: SINGLE TURN SPIRAL; Special Features: ITEM IS FAA CERTIFIED. 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.