The Seal Ring,metal, cataloged under National Stock Number 5330-00-490-1977, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Grover Corporation Dba Grover Piston Ring Co. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-00-490-1977 |
| Primary Part Number | P1036 |
| Item Name | Seal Ring,metal |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Grover Corporation Dba Grover Piston Ring Co |
| Status | ACTIVE |
| Joint Style | STEP JOINT |
| Inside Diameter | 7.126 INCHES MINIMUM AND 7.128 INCHES MAXIMUM IN |
| Radial Wall Thickness | 0.2670 INCHES MINIMUM AND 0.2870 INCHES MAXIMUM IN |
| Ring Style | CONTRACTING CONCENTRIC |
| Material | IRON OVERALL |
| 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 |
|---|---|
| P1036 PRIMARY | Grover Corporation Dba Grover Piston Ring Co (USA) |
| Reference | Meaning |
|---|---|
| 13218E4089 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5330-00-490-1977 is a Seal Ring,metal, manufactured by Grover Corporation Dba Grover Piston Ring Co, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-490-1977 has 1 manufacturer part number on file: P1036 (Grover Corporation Dba Grover Piston Ring Co).
1 possible match (shared part number, not a government interchangeability claim): 5340-00-958-3059. Verify interchangeability with system specifications before substitution.
Key specifications for P1036: Overall Width: 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN; Joint Style: STEP JOINT; Inside Diameter: 7.126 INCHES MINIMUM AND 7.128 INCHES MAXIMUM IN; Radial Wall Thickness: 0.2670 INCHES MINIMUM AND 0.2870 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.