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Figure 1
Silcosteel®-CR coated 316L stainless steel
shows greater than 10-fold better resistance
to HCl, compared to untreated stainless steel,
and a 4-fold improvement, compared to
Silcosteel®-coated stainless steel.
• 10 •
by Gary Barone, Metals Passivation Group Product Marketing Manager
Silcosteel®-CR Tubing & Fittings
Enhanced Resistance to Inorganic Acids
✔ Use to resist hydrochloric, sulfuric, and nitric acids.
✔ Reduces system maintenance and downtime.
✔ Tubing and many fittings in stock; custom coating service available.
In our continuing program of developing surface
technologies, Restek introduces this line of highly
corrosion resistant fittings
and tubing. Silcosteel®-CR*
coating is optimized to
enhance resistance to
hydrochloric, sulfuric, and
nitric acids (Figure 1).
Tubing and fittings used in
the presence of these
destructive acids require frequent inspection and
replacement. The Silcosteel ®-CR coating, applied to
widely-used Parker A-lok fittings and seamless 316L
stainless steel tubing, adds an order of magnitude of
protection against corrosive attack.
Silcosteel®-CR treatment involves a unique deposi-
tion process that completely covers the exposed sur-
face of the tubing or fitting and prevents contact
between the acids and the surface. The Silcosteel®-
CR coating itself is insoluble in these acids, and its
application provides an unmatched layer of protec-
tion to stainless steel.
Custom Silcosteel®-CR coating service is available.
Please contact our technical service department or
your local Restek representative to inquire about
having your items Silcosteel®-CR protected.
Description qty. cat.# price
1/16" Union ea. 22863
1/8" Union ea. 22864
1/4" Union ea. 22865
1/16" Tee ea. 22866
1/8" Tee ea. 22867
1/4" Tee ea. 22868
1/8" to 1/ 16" Reducer ea. 22869
1/4" to 1/ 16" Reducer ea. 22870
1/4" to 1/ 8" Reducer ea. 22871
1/8" Cross ea. 22872
1/4" Cross ea. 22873
1/16" Elbow ea. 22874
1/8" Elbow ea. 22875
1/4" Elbow ea. 22876
1/16" Plug ea. 22877
1/8" Plug ea. 22878
1/4" Plug ea. 22879
1/8" to 1/ 16" Tube End Reducer ea. 22880
1/4" to 1/ 16" Tube End Reducer ea. 22881
1/8" to 1/ 4 " Tube End Reducer ea. 22882
1/4" to 1/ 8 " Tube End Reducer ea. 22883
1/8" Port Connector ea. 22884
1/4" Port Connector ea. 22885
1/8" to 1/ 4 " Port Connector ea. 22886
1/8" to 1/ 8 " Male NPT Union ea. 22887
1/4" to 1/ 4 " Male NPT Union ea. 22888
1/16" to 1 / 8" Male NPT Union ea. 22889
1/8" to 1/ 4 " Male NPT Union ea. 22890
1/4" to 1/ 8 " Male NPT Union ea. 22891
1/8" to 1/ 8 " Female NPT Union ea. 22892
1/4" to 1/ 4 " Female NPT Union ea. 22893
1/4" to 1/ 8 " Female NPT Union ea. 22894
1/8" to 1/ 4 " Female NPT Union ea. 22895
Ordering Information | Silcosteel®-CR Fittings
Ordering Information | Silcosteel®-CR Seamless 316L Stainless Steel Tubing
*Patent pending.
Please note: An extra charge is applied for cutting
Silcosteel®-CR tubing. The charge is calculated from the
total number of pieces produced from cutting, for each
line item, as follows:
5 to 15 pieces $50 additional
16 to 30 pieces $100 additional
31 to 75 pieces $150 additional
76 to 99 pieces $200 additional
100 to 200 pieces $250 additional
Price-per-foot by length
ID OD cat.# 5-24 ft. 25-199 ft. 200-399 ft. >400 ft.
0.055" (1.40mm) 1 /8" (3.18mm)** 22896
0.180" (4.57mm) 1 /4" (6.35mm)** 22897
**0.035" wall thickness
Corrosion Rates: ASTM G31-72(99),
Immersion in 37.1% HCl
New Restek Catalog
By the time you receive this Advantage, the corners
of your 2003 Restek catalog should already be dog-
eared. Bigger and better than last year, it features
chromatography columns, accessories, and refer-
ence chemicals introduced throughout 2002 in the
RESTEK Advantage, plus many other items to make
life in your laboratory easier. And, it's not too soon
to start thinking of good, practical gifts for your co-
workers—the 2003 holiday season will be here
before you know it!
If you haven't received your catalog, it's lost in the
mail, or your colleagues have it. Call or fax us, and
we’ll be sure you get one (lit. cat.# 59473).