O-Rings
F72
Scientific Instrument Services, Inc.
™
Phone: 908-788-5550
www.sisweb.com/catalog/08/F72
O-Rings available in six different compositions
O
-Rings are available in six different materials from Scientific Instrument
Services. Each type has its advantages and disadvantages as listed in the chart
below, and the type required depends on the O-Ring application. Of the various
types of O-Rings available from SIS, Viton
™
is the most popular for mass spectrometers
and other laboratory instruments. This is due to Viton’s high temperature stability and good
resistance to chemicals and ozone.
On the following pages, O-Rings are listed by both nominal and actual size. The nom-
inal size is the closest fractional dimension to which the O-Ring is tooled and manufac-
tured. During manufacture the O-Rings shrink in size during the curing process. This
accounts for the slight differences between the nominal and actual sizes. The I.D. is the
inside diameter and the width (W) is the thickness of the O-Ring material. Order O-Rings
by using the part number prefix listed in the table below followed by the standard size num-
ber listed first in the O-Ring tables, i.e. V-110 for 3/8" Viton O-Ring.
NEW
- 7T01 - Perfluroelastomer (FFKM) O-rings. 7TO1 has been designed for very
demanding sealing applications in aggressive chemical environments. “7TO1” resists
attack by nearly all chemical reagents, including organic and inorganic acids, alkalines,
ketones, esters,alcohols, fuels, and hot water.
Viton PTFE, and Silicone Sheets
Viton, PTFE, and red Silicone sheets are now available in 12" x 12" sheets in the thick-
nesses listed below. These sheets are particularly well suited for cutting your own gaskets
and seals. Other materials and thicknesses are available on special request.
O-Ring Properties-* use this prefix in front of the size number when ordering O-Rings, i.e. V-110 for Viton size 3/8” O-Ring.
Property
Buna-N
Viton
Silicone
PTFE
Kalrez
7TO1*
Part No. Prefix
B-
V-
S-
T-
K-
7T01-
Tear Resistance
Fair
Good
Poor
Excellent
Good
Excellent
Abrasive Resistance
Good
Good
Poor
Excellent
Good
Good
Ozone Resistance
Poor
Excellent
Excellent
Good
Excellent
Excellent
Weather Resistance
Fair
Excellent
Excellent
Good
Excellent
Excellent
Heat Resistance
Fair
Excellent
Excellent
Good
Excellent
Excellent
Chemical Resistance
Fair
Excellent
Good
Excellent
Excellent
Excellent
Oil Resistance
Excellent
Excellent
Poor
Good
Excellent
Excellent
Acid Resistance
Fair
Excellent
Good
Excellent
Excellent
Excellent
Alkali Resistance
Good
Good
Fair
Excellent
Excellent
Excellent
Steam Resistance
Fair
Fair
Poor
Good
Excellent
Excellent
Minimum Usable Temp
-65°F
-65° F
-120°F
-110°F
-35°F
-35°F
-54°C
-54°C
-85°C
-79°C
-37°C
-37°C
Maximum Usable Temp.
300° F
500° F
450° F
500° F
550° F
560°F
150°C
260°C
232°C
260° C
288°C
293°C
Color
Black
Black
Red
White
Black
Part No.
Description
VS-0
Part #VS0--Click to order
Current Price: $54.00
Unit of Measure:
EA
Est. Ship Weight=1 lbs
Quantity in Stock=5
1/16" Viton
VS-1
Part #VS1--Click to order
Current Price: $92.95
Unit of Measure:
EA
Est. Ship Weight=1 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
1/8" Viton
VS-2
Part #VS2--Click to order
Current Price: $192.25
Unit of Measure:
EA
Est. Ship Weight=1 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
1/4" Viton
VS-3
Part #VS3--Click to order
Current Price: $29.50
Unit of Measure:
EA
Est. Ship Weight=1 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
1/32" Viton
TS-0
Part #TS0--Click to order
Current Price: $36.00
Unit of Measure:
EA
Est. Ship Weight=1 lbs
Quantity in Stock=2
1/32" PTFE
TS-1
Part #TS1--Click to order
Current Price: $89.00
Unit of Measure:
EA
Est. Ship Weight=1 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
1/16" PTFE
TS-2
Part #TS2--Click to order
Current Price: $92.00
Unit of Measure:
EA
Est. Ship Weight=1 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
1/8" PTFE
TS-3
Part #TS3--Click to order
Current Price: $246.50
Unit of Measure:
EA
Est. Ship Weight=1 lbs
Quantity in Stock=1
1/4" PTFE
S1-0
Part #S10--Click to order
Current Price: $15.00
Unit of Measure:
EA
Est. Ship Weight=1 lbs
Quantity in Stock=1
1/16" Red Silicone
S1-1
Part #S11--Click to order
Current Price: $25.00
Unit of Measure:
EA
Est. Ship Weight=1 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
1/8" Red Silicone
S1-2
Part #S12--Click to order
Current Price: $34.25
Unit of Measure:
EA
Est. Ship Weight=1 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
1/4" Red Silicone
S1-3
Part #S13--Click to order
Current Price: $52.25
Unit of Measure:
EA
Est. Ship Weight=1 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
1/2" Red Silicone
S1-4
Part #S14--Click to order
Current Price: $8.00
Unit of Measure:
EA
Est. Ship Weight=1 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
1/32" Red Silicone