PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3250-4418Spacer,flexible,pipeline

Unaflex Inc. · NSN 4730-00-192-8905 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-192-8905 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-192-8905. Primary manufacturer part number: 3250-4418.
Features
  • Spacer,flexible,pipeline — FSC 4730
  • Material: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR AND PLASTIC POLYESTER AND RUBBER NEOPRENE
  • Flange Thickness: 0.750 INCHES NOMINAL IN
  • Style Designator: ROUND
  • Inside Diameter: 5.000 INCHES NOMINAL IN
  • Material: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR AND PLASTIC POLYESTER AND RUBBER NEOPRENE
  • Body Length: 16.500 INCHES NOMINAL IN
  • Thickness: 0.625 INCHES NOMINAL IN
Applications
  • Applications requiring Rubber Isobutylene-Isoprene Class Iir and Plastic Polyester and Rubber Neoprene construction
General Description

The Spacer,flexible,pipeline, cataloged under National Stock Number 4730-00-192-8905, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Unaflex Inc.. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-192-8905
Primary Part Number3250-4418
Item NameSpacer,flexible,pipeline
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerUnaflex Inc.
StatusACTIVE
MaterialRUBBER ISOBUTYLENE-ISOPRENE CLASS IIR AND PLASTIC POLYESTER AND RUBBER NEOPRENE
Flange Thickness0.750 INCHES NOMINAL IN
Style DesignatorROUND
Inside Diameter5.000 INCHES NOMINAL IN
MaterialRUBBER ISOBUTYLENE-ISOPRENE CLASS IIR AND PLASTIC POLYESTER AND RUBBER NEOPRENE
Body Length16.500 INCHES NOMINAL IN
Thickness0.625 INCHES NOMINAL IN
Outside Diameter9.062 INCHES NOMINAL IN
Style DesignatorROUND
Flange Height2.031 INCHES NOMINAL IN
Flange Height2.031 INCHES NOMINAL IN
Outside Diameter9.062 INCHES NOMINAL IN
Flange Thickness0.750 INCHES NOMINAL IN
Fabrication MethodMOLDED
Body Length16.500 INCHES NOMINAL IN
Thickness0.625 INCHES NOMINAL IN
Inside Diameter5.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
4730-00-192-88961-15-518 INTERCHANGEABLE
Spacer,flexible,pipeline
La Favorite Industries Inc.
4730-00-192-88982-15-618 INTERCHANGEABLE
Spacer,flexible,pipeline
La Favorite Industries Inc.
4730-00-192-88991-15-824 INTERCHANGEABLE
Spacer,flexible,pipeline
La Favorite Industries Inc.
4730-00-192-89002-15-2512 INTERCHANGEABLE
Spacer,flexible,pipeline
La Favorite Industries Inc.
4730-00-192-89022-15-315 INTERCHANGEABLE
Spacer,flexible,pipeline
La Favorite Industries Inc.
4730-00-192-89042-15-415 INTERCHANGEABLE
Spacer,flexible,pipeline
La Favorite Industries Inc.
4730-00-401-37513111-7012-11-70 INTERCHANGEABLE
Spacer,flexible,pipeline
Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
4720-01-028-17911-15-212 INTERCHANGEABLE
Hose Assembly,nonmetallic
La Favorite Industries Inc.
4820-01-257-75222155-242 INTERCHANGEABLE
Center Casting,nozzle Assembly
Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives
Cross-Reference Index
Part NumberManufacturer
3250-4418 PRIMARY Unaflex Inc. (USA)
CS4730-0130 Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA)
FP-075188 Flow-Flex Engineering Co Div of Dearborn Rubber Corp (USA)
2-15-518 PRIMARY La Favorite Industries Inc. (USA)
75-0518-32FP Flow-Flex Engineering Co Div of Dearborn Rubber Corp (USA)
3212-0518-11-05 PRIMARY Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc (USA)
CS4730-0130-5X18 Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA)
Related Parts
4730-00-192-8896INTERCHANGEABLE
SPACER,FLEXIBLE,PIPELINE
1-15-518
4730-00-192-8898INTERCHANGEABLE
SPACER,FLEXIBLE,PIPELINE
2-15-618
4730-00-192-8899INTERCHANGEABLE
SPACER,FLEXIBLE,PIPELINE
1-15-824
4730-00-192-8900INTERCHANGEABLE
SPACER,FLEXIBLE,PIPELINE
2-15-2512
4730-00-192-8902INTERCHANGEABLE
SPACER,FLEXIBLE,PIPELINE
2-15-315
4730-00-192-8904INTERCHANGEABLE
SPACER,FLEXIBLE,PIPELINE
2-15-415
4730-00-401-3751INTERCHANGEABLE
SPACER,FLEXIBLE,PIPELINE
3111-7012-11-70
4720-01-028-1791INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
1-15-212
4820-01-257-7522INTERCHANGEABLE
CENTER CASTING,NOZZLE ASSEMBLY
2155-242

Frequently Asked Questions

What is NSN 4730-00-192-8905?

NSN 4730-00-192-8905 is a Spacer,flexible,pipeline, manufactured by Unaflex Inc., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-192-8905?

NSN 4730-00-192-8905 has 7 cross-referenced part numbers: 3250-4418 (Unaflex Inc.), CS4730-0130 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)), FP-075188 (Flow-Flex Engineering Co Div of Dearborn Rubber Corp), 2-15-518 (La Favorite Industries Inc.), 75-0518-32FP (Flow-Flex Engineering Co Div of Dearborn Rubber Corp) and 2 more.

What NSN replaces 4730-00-192-8905?

There are 9 known substitutes for 4730-00-192-8905: 4730-00-192-8896, 4730-00-192-8898, 4730-00-192-8899 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3250-4418?

Key specifications for 3250-4418: Material: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR AND PLASTIC POLYESTER AND RUBBER NEOPRENE; Flange Thickness: 0.750 INCHES NOMINAL IN; Special Features: FLANGE HAS 10 0.688 IN. DIA HOLES ON AND FURNISHED WITH 8 180 DEG SEGMENTED RETAINING RINGS IN; Style Designator: ROUND. 19 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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