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Specialty Sealing Fasteners

Featuring the brands you can trust since 1954:
BarTite & BarClad

BarClad Low-Torque Sealing Washers

Specialty Sealing Fasteners Since 1954

BarClad Low-Torque Sealing Washers

Performance Advantage
  • Seals in/out water, moisture, liquids, vapors, air, gas, dust, and other contaminants
  • Dampens noise and vibration
  • Low profile design perfect for tight spaces
  • Reusable & compatible with most surface finishes
  • Designed to seal fastener assemblies using standard hex, round, truss, binding, pan, fillister or socket head fasteners
  • Accommodates flat and oval head fasteners, and both flat or angled surfaces under head for an air & water-tightseal when torque is applied
  • Low-torque seal for fastening requirements under 100 inch-pounds
  • NEMA 250 Type 6P performance rated (Neoprene Version)
  • Can withstand up to 9,500psi internal hydrostatic pressure [Testing performed by Interek Testing Services NA, Inc.]
  • Made in USA
Metal Washer Materials
  • 304 Stainless Steel
  • 316 Stainless Steel
Sealant Options
Neoprene
  • Stable, non-aging
  • Temperature range: -60°F to 275°F (-51°C to 135°C)
  • Chemically resistant to water, gasoline, petroleum oils, salt sprays, alkali, some acids, organic and aromatic solvents, detergents, ozone, hydrocarbons, oxygenated and chlorinated solvents
Viton® (Registered Trademark of DuPont Performance Elastomers)
  • High performance elastomer providing excellent stability
  • Temperature range: -10°F to 400°F (-23°C to 204°C)
  • Resistant to diesel fuels, oils, chemicals, most mineral acids, compression set, mold, fungus, and many aliphatic and aromatic hydrocarbon fluids that act as solvents for other rubbers
  • Exceptional resistance to atmospheric oxidation, uv light, and weathering
  • Low burning characteristics: inherently more resistant to burning that other non-fluorinated hydrocarbon rubbers

What makes BarClad unique?

The BarClad washer features sealant that extends slightly beyond the metal washer height. When compressed, the metal washer will conform to the underside of the fastener head resulting in 100% metal to metal contact and sealant squeezing down into the fastener threads. Combined with its overall narrow diameter, the design allows for the washer to reach optimal sealing capabilities with lower torque requirements than most washers while fitting in tight, counter sunk, or hard to reach places.

Specialty Sealing Fasteners Since 1954

Product Data

Data Sheet

Specialty Sealing Fasteners Since 1954

Sealing Washer Sizes
Screw Size
Neoprene
304 SST
Part No.
Neoprene
316 SST
Part No.
Viton
304 SST
Part No.
Viton
316 SST
Part No.
EPDM
304 SST
Part No.
EPDM
316 SST
Part No.
Sealant ID
± .010
Metal Washer OD
± .010
Metal Washer Overall Height ± .003
Screw Size
#5
Neoprene 304 SST Part No.
LTN37120
Neoprene 316 SST Part No.
LTN37120C
Viton 304 SST Part No.
LTV37120
Viton 316 SST Part No.
LTV37120C
EPDM 304 SST Part No.
LTE37120
EPDM 316 SST Part No.
LTE37120C
Sealant ID ±.010
.120
Metal Washer OD ±.005
.375
Metal Washer Overall
Height ±.003
.050
Screw Size
#6
Neoprene 304 SST Part No.
LTN37138
Neoprene 316 SST Part No.
LTN37138C
Viton 304 SST Part No.
LTV37138
Viton 316 SST Part No.
LTV37138C
EPDM 304 SST Part No.
LTE37138
EPDM 316 SST Part No.
LTE37138C
Sealant ID ±.010
.138
Metal Washer OD ±.005
.375
Metal Washer Overall
Height ±.003
.050
Screw Size
#8
Neoprene 304 SST Part No.
LTN37164
Neoprene 316 SST Part No.
LTN37164C
Viton 304 SST
Part No.
LTV37164
Viton 316 SST Part No.
LTV37164C
EPDM 304 SST Part No.
LTE37164
EPDM 316 SST Part No.
LTE37164C
Sealant ID ±.010
.164
Metal Washer OD ±.005
.375
Metal Washer Overall
Height ±.003
.050
Screw Size
#10
Neoprene 304 SST Part No.
LTN37190
Neoprene 316 SST Part No.
LTN37190C
Viton 304 SST
Part No.
LTV37190
Viton 316 SST Part No.
LTV37190C
EPDM 304 SST Part No.
LTE37190
EPDM 316 SST Part No.
LTE37190C
Sealant ID ±.010
.190
Metal Washer OD ±.005
.375
Metal Washer Overall
Height ±.003
.050
Screw Size
#10-W"
Neoprene 304 SST Part No.
LTN43190
Neoprene 316 SST Part No.
LTN43190C
Viton 304 SST
Part No.
LTV43190
Viton 316 SST Part No.
LTV43190C
EPDM 304 SST Part No.
LTE43190
EPDM 316 SST Part No.
LTE43190C
Sealant ID ±.010
.190
Metal Washer OD ±.005
.437
Metal Washer Overall
Height ±.003
.050
Screw Size
#12
Neoprene 304 SST Part No.
LTN43216
Neoprene 316 SST Part No.
LTN43216C
Viton 304 SST
Part No.
LTV43216
Viton 316 SST Part No.
LTV43216C
EPDM 304 SST Part No.
LTE43216
EPDM 316 SST Part No.
LTE43216C
Sealant ID ±.010
.216
Metal Washer OD ±.005
.437
Metal Washer Overall
Height ±.003
.050
Screw Size
#1/4"
Neoprene 304 SST Part No.
LTN43250
Neoprene 316 SST Part No.
LTN43250C
Viton 304 SST
Part No.
LTV43250
Viton 316 SST Part No.
LTV43250C
EPDM 304 SST Part No.
LTE43250
EPDM 316 SST Part No.
LTE43250C
Sealant ID ±.010
.250
Metal Washer OD ±.005
.437
Metal Washer Overall
Height ±.003
.050
Screw Size
1/4-W"
Neoprene 304 SST Part No.
LTN56250
Neoprene 316 SST Part No.
LTN56250C
Viton 304 SST
Part No.
LTV56250
Viton 316 SST Part No.
LTV56250C
EPDM 304 SST Part No.
LTE56250
EPDM 316 SST Part No.
LTE56250C
Sealant ID ±.010
.250 ± .015
Metal Washer OD ±.005
.562
Metal Washer Overall
Height ±.003
.055 ± .005
Screw Size
5/16"
Neoprene 304 SST Part No.
LTN56312
Neoprene 316 SST Part No.
LTN56312C
Viton 304 SST
Part No.
LTV56312
Viton 316 SST Part No.
LTV56312C
EPDM 304 SST Part No.
LTE56312
EPDM 316 SST Part No.
LTE56312C
Sealant ID ±.010
.312
Metal Washer OD ±.005
.562
Metal Washer Overall
Height ±.003
.055 ± .005
Size
#5
304SS Part Number
LTN37120
316SS Part Number
LTV37120C
Metal Washer ID ±.005
LTN37120
Metal Washer OD ±.010
LTN37120C
Metal Washer Overall
Height ±.005
LTN37120
LTN37120C
.120
.375
.050
#6
LTN37138
LTN37138C
LTN37138
LTN37138C
LTN37138
LTN37138C
.138
.375
.050
#8
LTN37164
LTN37164C
LTN37164
LTN37164C
LTN37164
LTN37164C
.164
.375
.050
#10
LTN37190
LTN37190C
LTN37190
LTN37190C
LTN37190
LTN37190C
.190
.375
.050
#10-W*
LTN43190
LTN43190C
LTN43190
LTN43190C
LTN43190
LTN43190C
.190
.437
.050
#12
LTN43216
LTN43216C
LTN43216
LTN43216C
LTN43216
LTN43216C
.216
.437
.050
#1/4"
LTN43250
LTN43250C
LTN43250
LTN43250C
LTN43250
LTN43250C
.250
.437
.050
1/4"-W*
LTN56250
LTN56250C
LTN56250
LTN56250C
LTN56250
LTN56250C
.250 ±.015
.562
.055 ±.005
5/16"
LTN56312
LTN56312C
LTN56312
LTN56312
LTN56312
LTN56312
.312
.562
.055 ±.005

Torque Parameters

  • Performed on a 1” aluminum block using Class B button head screws with hex drives
  • Torque sealing washers down until taut
Item
Description
Torque Range
Item
LTN37120, LTV37120
Description
#5 BarClad Sealing Washer
Torque Range
< 50 in/lbs
Item
LTN37138, LTV37138
Description
#6 BarClad Sealing Washer
Torque Range
< 50 in/lbs
Item
LTN37164, LTV37164
Description
#8 BarClad Sealing Washer
Torque Range
< 50 in/lbs
Item
LTN37190, LTv37190
Description
#10 BarClad Sealing Washer
Torque Range
50-55 in/lbs
Item
LTN43190, LTV43190
Description
#10W BarClad Sealing Washer
Torque Range
50-55 in/lbs
Item
LTN43216, LTV43216
Description
#12 BarClad Sealing Washer
Torque Range
55-60 in/lbs
Item
LTN43250, LTV43250
Description
1/4” BarClad Sealing Washer
Torque Range
70-80 in/lbs
Item
LTN56312, LTV56312
Description
5/16” BarClad Sealing Washer
Torque Range
95-105 in/lbs
  • Performed on a 1” aluminum block using Class B button head screws with hex drives
  • Torque sealing washers down until at least half of the washer outside diameter has plastisol sealant peeking out fromaround the edges
Item
Description
Torque Range
Best Consistency
Item
RS/RSC49110
Description
#6 BarTite Sealing Washer
Torque Range
35-60 inch-pounds
Best Consistency
Item
RS/RSC49135
Description
#8 BarTite Sealing Washer
Torque Range
35-60 inch-pounds
Best Consistency
Item
RS/RSC56150
Description
#10 BarTite Sealing Washer
Torque Range
40-60 inch-pounds
Best Consistency
45-50 inch-pounds
Item
RS/RSC62200
Description
1/4" BarTite Sealing Washer
Torque Range
70-95 inch-pounds
Best Consistency
75-85 inch-pounds
Item
RS/RSC68280
Description
5/16” BarTite Sealing Washer
Torque Range
165-190 inch-pounds
Best Consistency
175-185 inch-pounds
Item
RS/RSC80325
Description
3/8” BarTite Sealing Washer
Torque Range
175-210 inch-pounds
Best Consistency
185-195 inch-pounds
Item
RS/RSC89390
Description
7/16” BarTite Sealing Washer
Torque Range
275-350 inch-pounds
Best Consistency
300-340 inch-pounds
Item
RS/RSC99450
Description
1/2” BarTite Sealing Washer
Torque Range
325-375 inch-pounds
Best Consistency
350-375 inch-pounds
Item
RSC113639
Description
5/8” BarTite Sealing Washer
Torque Range
60-80 foot-pounds
Best Consistency
Item
RSC144893
Description
7/8” BarTite Sealing Washer
Torque Range
90-120 foot-pounds
Best Consistency
Item
RSC128770
Description
3/4”BarTite Sealing Washer
Torque Range
75-100 foot-pounds
Best Consistency
Item
RSC160101
Description
1” BarTite Sealing Washer
Torque Range
120-150 foot-pounds
Best Consistency
barclad sealing washer
Torque Parameters
  • Performed on a 1” aluminum block using Class B button head screws with hex drives
  • Torque sealing washers down until taut
Item
Description
Torque Range
Item
LTN/V37120
Description
#5 BarClad Sealing Washer
Torque Range
< 50 in/lbs
Item
LTN/V37138
Description
#6 BarClad Sealing Washer
Torque Range
< 50 in/lbs
Item
LTN/V37164
Description
#8 BarClad Sealing Washer
Torque Range
< 50 in/lbs
Item
LTN/V37190
Description
#10 BarClad Sealing Washer
Torque Range
50-55 in/lbs
Item
LTN/V43190
Description
#10W BarClad Sealing Washer
Torque Range
50-55 in/lbs
Item
LTN/V43216
Description
#12 BarClad Sealing Washer
Torque Range
55-60 in/lbs
Item
LTN/V43250
Description
1/4” BarClad Sealing Washer
Torque Range
70-80 in/lbs
Item
LTN/V56312
Description
5/16” BarClad Sealing Washer
Torque Range
95-105 in/lbs

Stainless Steel – What are the benefits of using 316 Stainless Steel ?

What differentiates 316 Stainless Steel from 304 Stainless Steel?

The composition of Type 316 Stainless Steel includes slightly increased nickel content and the presence of2%-3% of molybdenum, which significantly increases the metal’s corrosion resistance.

    Where would I use 316 Stainless Steel?

    The use of 316 Stainless Steel is ideal in coastal areas, marine applications subject to sea sprays, industrialequipment exposed to corrosive process chemicals, and any area subject to high exposures of chloride(including de-icing salts).

      What are some of the benefits of 316 Stainless Steel?
      The unique composition of 316 Stainless Steel provides improved performance in many areas, including:
      • Superior Resistance to Chloride
        Corrosive salts can be present in many areas of the country. In addition to coastal areas, sea sprays, and salt in rain water, heavy exposure to chloride can also be present in many parts of the country that use de-icing salts on roadways. Salt-laden roads in colder climates can sometimes create even heavier salt deposits than coastal areas. The de-icing salts become airborne via dust and road mist that allows them to travel significant distances from busy roads and deposit on surrounding structures including buildings, exterior furniture, lampposts, etc.
      • Resistance to Corrosive Chemicals
        The addition of molybdenum increases the metal’s resistance to acetic, sulfuric, and sulfurous acids as well as many industrial chemicals and solvents. These types of corrosive process chemicals are used to make a wide variety of products including inks, textiles, photographic chemicals, paper, textiles, rubber, and bleaches.
      • Better Resistance to Cracking & Pitting
        316 Stainless Steel offers a reduced risk to stress corrosion cracking, improved creep resistance, and better protection against pitting and crevice corrosion.
      What are some common applications for Type 316 Stainless Steel?
      • Marine environment applications – (*with the exception of fasteners that require better strength & wear resistance versus corrosion resistance).
      • Coastal area structures and exterior products.
      • Architectural structures and exterior products found in colder climates where significant amounts of de-icing road salts are used.
      • Industrial equipment that handle corrosive process chemicals used to make such products as inks, textiles, bleaches, photographic chemicals, and rubber.

      Have Questions?

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      Toll-free: 888-493-8483

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