The Gasket, cataloged under National Stock Number 5330-01-181-4977, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc. Government technical data includes 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-181-4977 |
| Primary Part Number | 27-1821 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc |
| Status | ACTIVE |
| Cross-Sectional Thickness | 0.095 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN |
| Style Designator | NON-CIRCULAR |
| Material Document and Classification | MIL-STD-417 MIL STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | SOLID SINGLE OR COMPOSITION |
| Aperture Diameter | 3.250 INCHES NOMINAL IN |
| Outside Corner Bevel Length Along Width | 1.240 INCHES NOMINAL IN |
| Outside Corner Bevel Length Along Length | 1.240 INCHES NOMINAL IN |
| Bolt Hole Quantity | 4 |
| Center to Center Distance Between Bolt Holes Along Length | 2.860 INCHES MINIMUM AND 2.900 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN |
| Center to Center Distance Between Bolt Holes Along Width | 2.860 INCHES MINIMUM AND 2.900 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN |
| Material | RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR OR RUBBER BUTADIENE-STYRENE CLASS SBR OVERALL |
| Hole Diameter | 0.201 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 |
|---|---|
| 27-1821 PRIMARY | Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA) |
NSN 5330-01-181-4977 is a Gasket, manufactured by Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-181-4977 has 1 manufacturer part number on file: 27-1821 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc).
Key specifications for 27-1821: Cross-Sectional Thickness: 0.095 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN; Style Designator: NON-CIRCULAR; Material Document and Classification: MIL-STD-417 MIL STD SINGLE MATERIAL RESPONSE OVERALL; Overall Length: 2.940 INCHES MINIMUM AND 3.060 INCHES MAXIMUM IN. 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.