PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

X301Seal,nonmetallic Special Shaped

Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring · NSN 5330-00-252-5878 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-252-5878 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-252-5878. Primary manufacturer part number: X301.
Features
  • Seal,nonmetallic Special Shaped — FSC 5330
  • Material Document and Classification: N586,FSCM 70485 MFR REF SINGLE MATERIAL RESPONSE OVERALL
  • Attachment Hole Diameter: 0.128 INCHES NOMINAL IN
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
  • Cross-Sectional Shape Style: HOLLOW BULB
  • Cross-Sectional Height: 0.250 INCHES NOMINAL IN
  • Attachment Feature Circle Diameter: 10.250 INCHES NOMINAL SINGLE CIRCLE IN
  • Attachment Method: ROUND HOLE
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr Overall construction
General Description

The Seal,nonmetallic Special Shaped, cataloged under National Stock Number 5330-00-252-5878, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-252-5878
Primary Part NumberX301
Item NameSeal,nonmetallic Special Shaped
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerDcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring
StatusACTIVE
Material Document and ClassificationN586,FSCM 70485 MFR REF SINGLE MATERIAL RESPONSE OVERALL
Attachment Hole Diameter0.128 INCHES NOMINAL IN
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
Cross-Sectional Shape StyleHOLLOW BULB
Cross-Sectional Height0.250 INCHES NOMINAL IN
Attachment Feature Circle Diameter10.250 INCHES NOMINAL SINGLE CIRCLE IN
Attachment MethodROUND HOLE
ConstructionSOLID
Cross Section Inside Diameter0.125 INCHES NOMINAL IN
Cross-Sectional Thickness0.062 INCHES NOMINAL IN
Cross-Sectional Width0.750 INCHES NOMINAL IN
Fabrication MethodSOLID
Attachment Feature Quantity12
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
9390-00-012-4489 INTERCHANGEABLE
Nonmetallic Special Shaped Secti
9390-00-286-7371 INTERCHANGEABLE
Nonmetallic Special Shaped Secti
5330-00-641-2285QR0059 INTERCHANGEABLE
Packing Material
Rauland-Borg Corp
9390-00-886-8177 INTERCHANGEABLE
Nonmetallic Special Shaped Secti
5330-01-400-1048SKB-465 ITEM X301 INTERCHANGEABLE
Retainer,packing
Coffin Turbo Pump Inc
7025-01-608-1335X-301 INTERCHANGEABLE
Interface Unit,data Transfer
Controlbyweb Llc Dba Controlbyweb Div Controlbyweb
Cross-Reference Index
Part NumberManufacturer
5330025588 Basic Rubber and Plastics Co. (USA)
X301 Atlantic India Rubber Co Inc (USA)
X301 PRIMARY Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring (USA)
Related Parts
9390-00-012-4489INTERCHANGEABLE
NONMETALLIC SPECIAL SHAPED SECTI
9390-00-286-7371INTERCHANGEABLE
NONMETALLIC SPECIAL SHAPED SECTI
5330-00-641-2285INTERCHANGEABLE
PACKING MATERIAL
QR0059
9390-00-886-8177INTERCHANGEABLE
NONMETALLIC SPECIAL SHAPED SECTI
5330-01-400-1048INTERCHANGEABLE
RETAINER,PACKING
SKB-465 ITEM X301
7025-01-608-1335INTERCHANGEABLE
INTERFACE UNIT,DATA TRANSFER
X-301

Frequently Asked Questions

What is NSN 5330-00-252-5878?

NSN 5330-00-252-5878 is a Seal,nonmetallic Special Shaped, manufactured by Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-252-5878?

NSN 5330-00-252-5878 has 3 cross-referenced part numbers: 5330025588 (Basic Rubber and Plastics Co.), X301 (Atlantic India Rubber Co Inc), X301 (Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring).

What NSN replaces 5330-00-252-5878?

There are 6 known substitutes for 5330-00-252-5878: 9390-00-012-4489, 9390-00-286-7371, 5330-00-641-2285 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of X301?

Key specifications for X301: Material Document and Classification: N586,FSCM 70485 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Attachment Hole Diameter: 0.128 INCHES NOMINAL IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL; Cross-Sectional Shape Style: HOLLOW BULB. 13 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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