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Insulators, Washers, & 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.

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 Acids (Weak) Acids (Strong) Alkalies (Weak) Alkalies (Strong) Organic Solvents
Fluorocarbons TFE Inert Inert Inert Inert Inert
Nylon G A R R R
Polyethylene (low density) R A-O R R G
Polyethylene (high density) R A-O R R G
Polypropylene R A-O R R R
Rigid polyvinyl chloride R R R R A
Phenolics SA A SA A SA
Zirconia ceramics R R R R R
Alumina ceramics R R R R R

 

Material Water Absorption % 24 Hrs. Oxygen and Ozone High Vacuum Ionizing Radiation Tensile Strength
Fluorocarbons TFE 0.0 Inert - P 2,500
Nylon 1.5 SA - F 10,000
Polyethylene (low density) 0.15 A F F 2,000
Polyethylene (high density) 0.1 A F G 4,000
Polypropylene 0.01 A F G 5,000
Rigid polyvinyl chloride 0.10 R - P 6,000
Phenolics 0.6 - - G 7,500
Zirconia ceramics 0.0 R - - -
Alumina ceramics 0.0 R - - -

 

Material High Temperature Resistance Low Temperature Resistance
Fluorocarbons TFE 550 G-275
Nylon 300 G-70
Polyethylene (low density) 140 G-80
Polyethylene (high density) 160 G-100
Polypropylene 300 P
Rigid polyvinyl chloride 150 P
Phenolics 400 L
Zirconia ceramics - -
Alumina ceramics 3180 -



Shoulder Washers
 

shoulderwsh.gif


Material

P/N		 Dimensions (inches)
L A B G F
Ceramic SW1402473 .050 .375 .090 .193 .250
SW1425473 .050 .625 .125 .250 .375
TFE Glass SW1439785 .109 .625 .094 .250 .313












Teflon®		 SW1400783 .109 .625 .109 .250 .313
SW1402783 .063 .375 .063 .188 .250
SW1403783 .125 .625 .438 .250 .406
SW1406783 .234 .625 .109 .250 .375
SW1407783 .109 .625 .109 .250 .375
SW1413783 .063 .656 .500 .250 .406
SW1418783 .125 .641 .500 .359 .453
SW1419783 .109 .625 .188 .250 .375
SW1420783 .188 .625 .109 .250 .375
SW1421783 .125 .438 .063 .188 .297
SW1423783 .055 .625 .500 .250 .531
SW1424783 .063 .750 .250 .250 .500
SW1425783 .050 .625 .109 .250 .375
SW1426783 .050 .625 .313 .250 .375
SW1427783 .313 .500 .063 .203 .313
Nylon SW1443709 .125 .375 .031 .188 .250
SW1427709 .313 .500 .063 .203 .313
SW1444709 .047 .375 .094 .188 .250




Spacers and Flat Washers




 Material

P/N		 Dimensions (inches)
L A B


















Teflon®		 ST1200783 .500 .375 .250
ST1202783 .250 .375 .250
ST1203783 .188 .375 .250
ST1204783 .250 .625 .250
ST1205783 .750 .500 .359
ST1206783 .500 .500 .344
ST1207783 .500 .625 .375
ST1208783 .250 .625 .406
ST1209783 .625 .625 .375
ST1214783 .375 .625 .375
ST1219783 .750 .750 .490
ST1221783 .375 .500 .375
ST1225783 .375 .625 .500
ST1226783 1.00 .625 .375
ST1231783 .125 .422 .363
ST1232783 .375 .375 .250
ST1253783 .062 .500 .250
ST1254783 .062 .625 .250
ST1255783 .125 .500 .125
ST1256783 .188 .445 .250




Nylon		 09709E1000FW0000 .047 .438 .203
ST1240709 .062 .375 .203
ST1239709 .062 .375 .250
ST1230709 .125 .500 .313
09709E2500FW0000 .094 .500 .250


Ceramic 		ST1220473 .250 .500 .375
ST1240473 .062 .375 .188
ST1247473 .500 1.00 .560
ST1248473 .125 .600 .394
ST1249473 .125 .625 .250

 

Rod Insulators

rodinsul.gif

Material PN OD (inches) ID (inches)

Teflon®

 04783002180015 .218 .188
04783002960025 .296 .250
04783003750062 .375 .250
04783004060078 .406 .250
04783004370093 .437 .250
04783004370031 .437 .375
04783005000062 .500 .375
04783006250125 .625 .375
04783006250078 .625 .470
04783008750162 .875 .550

Ceramic

 04473003750062 .375 .250
04473005000062 .500 .375


Crevice Washers

crevice.gif



 Material

P/N		 Dimensions (inches)

# of Slots
ID OD Thickness


Teflon®		 CW1900783 .391 .625 .250 12
CW1902783 .265 .625 .250 12
CW1904783 .265 .625 .100 12
Ceramic CW1902473 .265 .625 .250 12


Fasteners

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

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.

Contact Metal Samples Corrosion Monitoring Systems sales department for pricing and availability.

Main Office:
Phone: (256) 358-4202
Fax: (256) 358-4515
E-mail: msc@alspi.com

 

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