عایق

Insulators, Washers, and Spacers

Metal Samples makes a variety of insulators, washers, and spacers used to isolate test specimens. We also make insulator kits that contain an assortment of washers, screws, nuts, and stems. These kits are designed for field use when a variety of insulators are needed.

Shoulder Washers

Spacers and Flat Washers

Rod Insulators

Crevice Washers

Fasteners

Metal Samples makes fasteners in almost any material required, including:

• Brass 
• 304
• 316
• Teflon®
• Nylon
• Tantalum
• HASTELLOY® C-276
• CARPENTER 20Cb3®
• HASTELLOY® B-2
• Titanium
• INCONEL® alloy 600

Material vs. Environment

R = Resistance, A = Attacked, SA = Slight Attack, A-O = Attacked by Oxidizing Acids 
G = Good, F = Fair, P = Poor, L = Little Change

Material	Temperature Range
Fluorocarbons TFE	-275 to 550°F	Inert	Inert	Inert	Inert	Inert	0.0	Inert	-	P	2,500
Nylon	-70 to 300°F	G	A	R	R	R	1.5	SA	-	F	10,000
Polyethylene (low density)	-80 to 140°F	R	A-O	R	R	G	0.15	A	F	F	2,000
Polyethylene (high density)	-100 to 160°F	R	A-O	R	R	G	0.1	A	F	G	4,000
Polypropylene	300°F	R	A-O	R	R	R	0.01	A	F	G	5,000
Rigid polyvinyl chloride	150°F	R	R	R	R	A	0.10	R	-	P	6,000
Phenolics	400°F	SA	A	SA	A	SA	0.6	-	-	G	7,500
Zirconia ceramics	-	R	R	R	R	R	0.0	R	-	-	-
Alumina ceramics	3180°F	R	R	R	R	R	0.0	R	-	-	-

Teflon® is a registered trademark of DuPont. HASTELLOY® is a registered trademark of Haynes International, Inc.  INCONEL® alloy 600 is a registered trademark of Special Metals. CARPENTER 20Cb3® is a registered trademark of Carpenter Technologies.