UNILOK® Weld & Metal Face Seal (UCR) fittings are designed and manufactured as high performance and high purity components
by our own know-how to be accumulated throughout the years.
UNILOK® guarantees high quality butt welding between tube and fittings as well as leak free assembly for critical applications.

Reference Specification : SEMA-90120400B

SEM, ESCA/XPS, AES analysis for all electro polished
products are used to measure surface cleanliness
and anticorrosion requirements in accordance with
SEMA specifications.
SEM – SEMA 90120401B-STD
ESCA/XPS – SEMA 90120403B-STD
AES – SEMA 91060573B-STD

Female nuts are silver plated for easy of assembly, consistent make-up, prevention of galling and reduction of the torque required for fitting assembling.

UNILOK fittings are rated to a helium leak rate of less than
1×10-9 mbar.l/sec and tested in accordance with SEMA-90120391B-STD and
SEMI F1-96.

According to ASTM F1394-92

According to SEMA-90120397B-STD

0.89mm(0.035″) wall thick fittings are available upon request. When ordering,
be sure to add to the part number.

Pressure ratings are calculated in accordance with ANSI/ASME B31.3 for stainless steel pressure piping at room temperature.

According to SEMA-90120397B-STD

According to SEMI E49.6

Each component is double bagged to ensure component cleanliness and to protect them from environmental contamination. Referenced specification : SEMI E49.1.

UNILOK weld fittings are ordered by part number as shown below.

Example: The following part number, CLGS-0804-SM-EP is designated for Long Gland S, 1/2″UCR x 1/4″TBW”, Single Melting 316LSS, EP.