The Seal,plain Encased, cataloged under National Stock Number 5330-00-581-6764, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5330-00-581-6764 |
| Primary Part Number | 21158-0077 |
| Item Name | Seal,plain Encased |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc |
| Status | ACTIVE |
| Temp Rating | -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF |
| Seal Width | 0.312 INCHES NOMINAL IN |
| Sealing Element Style | ANGULAR |
| Maximum Pressure Rating | 7.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Hardness Rating | 80.0 SHORE DUROMETER A NOMINAL OVERALL |
| Housing Bore Diameter | 1.125 INCHES NOMINAL IN |
| Accommodated Shaft Maximum Rated Speed | 3000 FEET PER MINUTE FT |
| Case Style | RECESSED |
| Color | BLACK |
| Accommodated Shaft Diameter | 0.594 INCHES NOMINAL IN |
| Material | STEEL CASE |
| Material | RUBBER SYNTHETIC SEALING ELEMENT |
| 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 |
|---|---|
| 21158-0077 PRIMARY | Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc (USA) |
| B0560 | Graham Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 63X77 | 3/1 Design control — primary reference Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc |
NSN 5330-00-581-6764 is a Seal,plain Encased, manufactured by Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-581-6764 has 2 manufacturer part numbers on file: 21158-0077 (Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc), B0560 (Graham Co Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5330-00-930-8222, 5355-01-378-4941. Verify interchangeability with system specifications before substitution.
Key specifications for 21158-0077: Temp Rating: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF; Seal Width: 0.312 INCHES NOMINAL IN; Sealing Element Style: ANGULAR; Maximum Pressure Rating: 7.0 POUNDS PER SQUARE INCH (PSI) LBS. 12 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.