The Felt,mechanical,preformed, cataloged under National Stock Number 5330-00-986-3755, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Dresser Industries Inc Leroi Div. Government technical data includes 9 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 | 5330-00-986-3755 |
| Primary Part Number | H125-256 |
| Item Name | Felt,mechanical,preformed |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Dresser Industries Inc Leroi Div |
| Status | ACTIVE |
| Cross-Sectional Height | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Cross-Sectional Width | 0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Style Designator | CIRCULAR |
| Material Document and Classification | SAE F1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 1.750 INCHES NOMINAL IN |
| Aperture Diameter | 1.500 INCHES NOMINAL IN |
| Material | WOOL COMP 16R1 OVERALL |
| Joint Type | SCARF-PERIPHERAL 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 |
|---|---|
| H125-256 PRIMARY | Dresser Industries Inc Leroi Div (USA) |
NSN 5330-00-986-3755 is a Felt,mechanical,preformed, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-986-3755 has 1 manufacturer part number on file: H125-256 (Dresser Industries Inc Leroi Div).
Key specifications for H125-256: Cross-Sectional Height: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN; Cross-Sectional Width: 0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN; Style Designator: CIRCULAR; Material Document and Classification: SAE F1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 9 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.