The Ring,piston, cataloged under National Stock Number 2810-01-056-6499, is classified within Federal Supply Class 2810 (Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Trelleborg Sealing Solutions Us, Inc.. Government technical data includes 8 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 | 2810-01-056-6499 |
| Primary Part Number | S30071-3011-99 |
| Item Name | Ring,piston |
| FSC / FSG | 2810 / 28 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components |
| Manufacturer | Trelleborg Sealing Solutions Us, Inc. |
| Status | ACTIVE |
| Material Document and Classification | ZZ-53 MFR REF SINGLE MATERIAL RESPONSE AND MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | STRAIGHT FACE, DOUBLE SCRAPER, W/EXPANDER |
| Joint Style | STEP JOINT |
| Oil Passage Type and Quantity | 1 SLOT INSIDE PERIPHERY |
| Radial Wall Thickness | 0.1240 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 1.875 INCHES IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE AND STEEL COMP 301 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| S30071-3011-99 PRIMARY | Trelleborg Sealing Solutions Us, Inc. (USA) |
NSN 2810-01-056-6499 is a Ring,piston, manufactured by Trelleborg Sealing Solutions Us, Inc., classified under FSC 2810, Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components. Status: active.
NSN 2810-01-056-6499 has 1 manufacturer part number on file: S30071-3011-99 (Trelleborg Sealing Solutions Us, Inc.).
Key specifications for S30071-3011-99: Overall Width: 0.0600 INCHES NOMINAL IN; Material Document and Classification: ZZ-53 MFR REF SINGLE MATERIAL RESPONSE AND MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: STRAIGHT FACE, DOUBLE SCRAPER, W/EXPANDER; Joint Style: STEP JOINT. 8 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.