Fastener Seals

FASTENER SEALS FROM DICHTOMATIK

Fastener Seals consist of an inner rubber component used in conjunction with an outer metal washer that supports the sealing function of a fastener such as a screw or bolt. The rubber and metal combination create an ideal fit to eliminate any clearance gaps between the housing components and protects against potential leaks in many static applications.

Dichtomatik can provide Fastener Seals in multiple designs, materials, and sizes for use in many industries.

VARIETY

Covering a wide variety of application in bolts, screws and tube fittings, our durable line of fittings and fastener seals, or bearing seals, provide reliable solutions from the easiest to the most complex problems.

HOW USED

Thread, fastener and bonded seals are seals that are used to seal off potential leak paths on threaded fasteners such as bolts or threaded rods. Our line of fasteners is designed so that after tightening down the fastener in the assembly, the rubber of the seal will be compressed to the predetermined amount which will cause it to seal the clearance gap between the fastener and the mating components.

APPLICATIONS

Fastener seals are intended to take the place of an o-ring in certain assemblies. By using a fastener seal, there is no need to have an o-ring groove machined into the component that the fastener will pass through.

OUR TYPES OF FASTENER SEALS

BONDED SEALS

Similar to a standard washer, a Bonded Seal combines the rigidity of an outer metal ring along with a flexibility of an inside rubber seal. The metal washer provides much needed support while keeping the inner rubber seal from being over compressed and eliminating gaps to create a form-fitting seal.

DC FASTENER SEALS

DC Fastener Seals have an inner rubber seal molded into an outer metal washer. They are designed to seal beneath the head and along the base of the bolt to provide long reliable service. The ridged design of this seal provides easy and accurate seal placement to create an ideal fit. DC Fastener Seals are available to accommodate standard fastener sizes; making them efficient and simple to use.

DCCL THREAD SEALS

DCCL Thread Seals differ slightly from other Fastener Seals in appearance and application. The inner rubber seal has a triangular shape design for sealing directly against the threads of the fastener. DCCL Thread Seals will prevent fluid from leaking out past the bolt through the threaded seal and can easily be assembled and disassembled as needed from contact surfaces without the use of special tools. DCCL Thread Seals are readily available in standard fastener sizes and are able to be reused with proper removal.

PRODUCT CHARACTERISTICS

  • Standard rubber material is NBR. Standard metal is zinc-plated carbon steel.
  • Not all standard item numbers may be tooled at the time of printing this information
  • Viton, EPDM, and Silicone rubber as well as other metal/plating materials are available upon request.
  • Special material requests may include a one-time setup charge.

BONDED SEALS Common Sizes

Item Number Bolt Size
(Inch)
I.D.
(Inch)
O.D.
(Inch)
Metal Thickness
(Inch)
BS001 6BA 0.120 0.250 0.047
BS002 4BA 0.162 0.286 0.047
BS003 2BA 0.205 0.330 0.047
BS004 1/4" 0.270 0.520 0.047
BS005 1/4" 0.275 0.525 0.047
BS007 5/16" 0.340 0.560 0.047
BS020 3/8" 0.408 0.625 0.079
BS009 7/16" 0.460 0.750 0.079
BS021 1/2" 0.541 0.810 0.079
BS010 9/16" 0.585 0.875 0.079
BS023 3/8" BSP 0.680 0.937 0.079
BS011 5/8" 0.650 1.000 0.079
BS012 11/16" 0.715 1.000 0.091
BS024 3/4" 0.775 1.060 0.091
BS025 13/16" 0.848 1.125 0.091
BS026 7/8" 0.925 1.250 0.091
BS013 15/16" 0.955 1.310 0.091
BS027 1" 1.065 1.375 0.091
BS014 1 1/8" 1.155 1.440 0.091
BS029 1 3/16" 1.213 1.500 0.091
BS028 1 1/16" 1.095 1.520 0.091
BS015 1 1/4" 1.285 1.630 0.126
BS030 1 5/16" 1.334 1.685 0.126
BS016 1 3/8" 1.415 1.750 0.126
BS017 1 1/2" 1.534 1.880 0.126
BS032 1 5/8" 1.690 2.062 0.126
BS018 1 3/4" 1.785 2.250 0.126
BS033 1 7/8" 1.907 2.307 0.126
BS019 2" 2.035 2.500 0.126
BS034 2 1/8" 2.161 2.750 0.126

The following diagrams are a general guideline for measuring bonded seals.

Please refer to this table for determining your required size.

DC FASTENER SEALS

Common Sizes

Item Number Bolt Size (Inch) I.D.(Inch) O.D.(Inch) Metal Thickness (Inch)
DC 6 #6 0.130 0.385 0.040
DC 8 #8 0.156 0.385 0.040
DC 10 #10 0.180 0.443 0.050
DC 1/4 1/4 0.240 0.505 0.050
DC 1/4OS 1/4 OS 0.245 0.531 0.050
DC 5/16 5/16 0.301 0.603 0.050
DC 3/8 3/8 0.364 0.666 0.050
DC 7/16 7/16 0.427 0.760 0.050
DC 1/2 1/2 0.490 0.880 0.050
DC 9/16 9/16 0.552 1.067 0.050
DC 5/8 5/8 0.615 1.193 0.050
DC 11/16 11/16 0.674 1.260 0.050
DC 3/4 3/4 0.740 1.322 0.064
DC 13/16 13/16 0.798 1.416 0.064
DC 7/8 7/8 0.864 1.510 0.064
DC 15/16 15/16 0.921 1.635 0.064
DC 1 1 0.988 1.760 0.064
DC 1 - 1/16 1 - 1/16 1.050 1.822 0.064
DC 1 - 1/8 1 - 1/8 1.106 1.885 0.064
DC 1 - 3/16 1 - 3/16 1.167 1.947 0.064
DC 1 - 1/4 1 - 1/4 1.229 2.010 0.064
DC 1 - 5/16 1 - 5/16 1.290 2.072 0.064
DC 1 - 3/8 1 - 3/8 1.352 2.197 0.064
DC 1 - 7/16 1 - 7/16 1.413 2.135 0.064
DC 1 - 1/2 1 - 1/2 1.475 2.260 0.091
DC 1 - 5/8 1 - 5/8 1.600 2.385 0.091
DC 1 - 3/4 1 - 3/4 1.725 2.510 0.091
DC 1 - 7/8 1 - 7/8 1.850 2.635 0.091
DC 2 2 1.975 2.760 0.091
DC 3 3 2.975 5.500 0.120

The following diagrams are a general guideline for measuring fastener seals.

Please refer to this table for determining your required size.

DCCL THREAD SEALS

Common Sizes

Part Number Bolt Size (Inch) O.D. (Inch) Metal Thickness (Inch)
DCCL 6 #6 0.406 0.050
DCCL 8 #8 0.406 0.050
DCCL 10 #10 0.469 0.050
DCCL 12 #12 0.562 0.050
DCCL 1/4 1/4 0.562 0.050
DCCL 5/16 5/16 0.687 0.064
DCCL 3/8 3/8 0.750 0.064
DCCL 7/16 7/16 0.906 0.078
DCCL 1/2 1/2 1.000 0.078
DCCL 9/16 9/16 1.094 0.094
DCCL 5/8 5/8 1.187 0.094
DCCL 3/4 3/4 1.375 0.109
DCCL 7/8 7/8 1.562 0.109
DCCL 1 1 1.750 0.120
DCCL 1-1/8 1 - 1/8 1.875 0.120
DCCL 1-1/4 1 - 1/4 2.000 0.120
DCCL 1-3/8 1 - 3/8 2.125 0.120
DCCL 1-1/2 1 - 1/2 2.250 0.120
DCCL 1-3/4 1 - 3/4 3.375 0.179

The following diagrams are a general guideline for measuring thread seals.

Please refer to this table for determining your required size.

The information contained herein is believed to be reliable, but no representation, guarantees or warranties of any kind are made to its accuracy or suitability for any purpose. The information presented herein is based on laboratory testing and does not necessarily indicate end product performance.

Full scale testing and end product performance are the responsibility of the user.