Blind Cap
Union Blind Nut
End Cap Fittings
Pipe Fittings
Blind Cap

Stainless Steel Sanitary Hygienic Plug Union Blind Nut

JN-UN-23 1010
Size: 1/2" – 4"
Grade: SS304, SS316L
Standard: DIN, SMS, 3A, ISO
Working pressure: 1.6 – 1.6 MPa
Test pressure: 1.5 × working pressure
Temperature Range: -20℃ to +180℃
PTFE seals: Food‑grade, corrosion‑resistant, good sealing
Viton seals: High temperature resistant, anti‑aging, suitable for harsh conditions
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Stainless Steel Sanitary Hygienic Plug Union Blind Nut
 
Union Blind Nut is a blind sealing pipe fitting used fordead-end sealing in hygienic and industrial pipelines. It is usually installed at the pipe end or unused branch port to safely close the pipeline and prevent medium leakage. Made of stainless steel, it features aunion-type quick connectionEnd Cap Fittings for easy installation and maintenance. Common types include standard union blind nutandsanitary union blind nut, widely used in food, beverage, Pipe Fittings Blank Nut pharmaceutical and fluid pipeline systems.
 
Union Blind Nut is a dead-end sealing fitting, different from ordinary unions which are used forpipe connection. It seals the pipeline end, while standard unions only connect two pipes. Our products adopt integral high-precision forgingandmirror polishing, with better sealing and durability. We usefood-grade PTFE/Viton seals and strictly follow 3A/DIN/SMS standards. Compared with others, our union blind nuts havelonger service life, higher pressure resistance and no leakage, more suitable for hygienic pipeline applications.
 

Accessories

 Component & Material Table
  • Union Body & Blind Nut: 304/316L Stainless Steel (sanitary-grade forging, high strength)
  • Seal Ring: PTFE/EPDM/Viton (food-grade, corrosion-resistant, high-temperature resistant)
  • Union Connector: 304/316L Stainless Steel (precision machining, polished finish)
  • Gasket:Food-grade PTFE (sealing-enhanced, non-toxic)
Product Parameter Details
  • Material：Main body & connector: 304/316L stainless steel; Seals & gaskets: food-grade PTFE/EPDM/Viton
  • Structure Form：Standard: union-type blind structure, quick-connect design; Optional: no jacket structure, integral forming without seams
  • Pressure Rating：PN10/PN16; 150PSI (working pressure); Test pressure: 1.5× working pressure
  • Function：Pipeline end dead-end sealing, blind plug for unused pipeline branches; dust-proof and leak-proof for pipeline ports
  • Grade Classification：Hygiene grade: 3A/DIN 11851; Industry grade: chemical grade, general industrial grade (for fluid/chemical pipelines)
  • Specification Match：Standards: DIN (German), SMS (Swedish), 3A (American), ISO (international), NPT/BSP; Size range: 1/2"–4"
  • Certification Grade：Hygiene certification: 3A, FDA; Safety certification: CE, ISO 9001
  • Installation Direction：Horizontal & vertical installation (no direction restriction; easy to assemble and disassemble)
  • Customization Service：Custom size (5"+), special seal material (Viton), custom thread type; sample support for testing
 
 

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