PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BU-90-8CP-K4Gasket

Nupro Co · NSN 5330-01-284-2519 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-284-2519 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-284-2519. Primary manufacturer part number: BU-90-8CP-K4.
Features
  • Gasket — FSC 5330
  • Temp Rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
  • Criticality Code Justification: ZZZW
  • Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL OVERALL
  • Departure From Cited Document: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
  • Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
  • Elongation Percentage: 125 MAXIMUM
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr Overall construction
General Description

The Gasket, cataloged under National Stock Number 5330-01-284-2519, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Nupro Co. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-01-284-2519
Primary Part NumberBU-90-8CP-K4
Item NameGasket
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerNupro Co
StatusACTIVE
Temp Rating-65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
Criticality Code JustificationZZZW
Hardness Rating75.0 SHORE DUROMETER A NOMINAL OVERALL
Departure From Cited DocumentMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
Cross-Sectional Height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
Elongation Percentage125 MAXIMUM
Center Hole Diameter0.357 INCHES MINIMUM AND 0.367 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5331-01-160-2508M83461/1-110 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5330-01-721-0911 INTERCHANGEABLE
Parts Kit,seal Replacement,mecha
Cross-Reference Index
Part NumberManufacturer
BU-90-8CP-K4 Nupro Co (USA)
B-8CPA2-XXXITEM3 Nupro Co (USA)
M83461/1-110 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
BU-90-8CP-K4 Swagelok Co (USA)
B-8CPA2-XXXITEM3 Swagelok Co (USA)
BU60-8CP-P4 Swagelok Co (USA)
BU60-8CP-P4 Nupro Co (USA)
V-7525PC7 Portland Valve Llc (USA)
Related Parts
5331-01-160-2508INTERCHANGEABLE
O-RING
M83461/1-110
5330-01-721-0911INTERCHANGEABLE
PARTS KIT,SEAL REPLACEMENT,MECHA

Frequently Asked Questions

What is NSN 5330-01-284-2519?

NSN 5330-01-284-2519 is a Gasket, manufactured by Nupro Co, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-284-2519?

NSN 5330-01-284-2519 has 8 cross-referenced part numbers: BU-90-8CP-K4 (Nupro Co), B-8CPA2-XXXITEM3 (Nupro Co), M83461/1-110 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), BU-90-8CP-K4 (Swagelok Co), B-8CPA2-XXXITEM3 (Swagelok Co) and 3 more.

What NSN replaces 5330-01-284-2519?

There are 2 known substitutes for 5330-01-284-2519: 5331-01-160-2508, 5330-01-721-0911. Verify interchangeability with system specifications before substitution.

What are the specifications of BU-90-8CP-K4?

Key specifications for BU-90-8CP-K4: Temp Rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL; Criticality Code Justification: ZZZW; Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL OVERALL. 8 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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