Automotive Weatherstrips

Automotive weatherstrips are exactly what they say – molded rubber or sponge seals which keep the elements from entering vehicle interiors.

At Canada Rubber Group Inc. (CRGI), we have over 25 years’ experience in supplying automotive weatherstripping solutions to the world’s automakers and their supply chains. We can supply both static and dynamic sealing solutions. Static seals are used where there is no movement occurring between the two surfaces being sealed. Dynamic seals, in contrast, are used where motion occurs, such as between a vehicle window and the door frame.

CRGI Automotive Weatherstrips: Solutions

Automotive weatherstrip solutions we can supply include the following:

  • Door seals. Mounted on the vehicle door or body, these weatherstrips prevent the ingress of moisture, dirt, and dust into the vehicle cabin. They may consist of a primary and secondary seal. Door seals can be fastened to the door or body through a variety of means, including fastening by clips, adhesive tapes, or channel mounting.

  • Door belt weatherstrips. These automotive weatherstrips are found on vehicle doors. They prevent moisture, dirt and dust from entering the vehicle cabin. Typically, each vehicle door has two belt weatherstrips. The inner weatherstrip is fastened to the interior of a door, while the outer belt weatherstrip is attached to the door exterior. These weatherstrips can be fabricated from a variety of materials, including rubber, sponge, or felt.

  • Window seals. Automotive weatherstrips which are designed to enclose and seal the vehicle windows and windshield. Vent window seals are also available for windows designed to be opened to vent the vehicle cabin.

  • Window channels. Designed for use on vehicles with specific glass types, these molded channels protect cabin interior while sealing out the elements and vibrations.

  • Hood seals. These automotive weatherstrips seal the space between the vehicle hood and the engine compartment.

  • Trunk seals. Attached to the vehicle trunk, these weatherstrips provide an effective seal between the trunk exterior and the external environment.

  • Cowl seals. Cowl seals are weatherstrips that provide a seal between the vehicle firewall and the rear of the hood. In addition to preventing fumes, moisture, dirt, and dust from entering the vehicle cabin, hood cowl seals can also help suppress vibrations transmitted from the vehicle body onto the windshield.

CRGI can supply automotive weatherstrips produced from a variety of rubbers and sponges. Compounds that CRGI often uses for the provision of automotive weatherstrips include the following:

  • EPDM

  • Fluoroelastomers, including Viton®

  • AEM (Ethylene Acrylic Elastomer), including Vamac®

  • Nitrile (NBR) and Hydrogenated Nitrile (HNBR)

  • Closed and open cell sponges

CRGI can also co-extrude materials such as solid and foam EPDM to produce parts which combine structural strength with flexibility. In addition, we can supply parts complete with plastic clips and/or double-sided adhesive.

CRGI has supplied a variety of automotive weatherstrips that meet ASTM D2000 line call-outs, as well as the material specifications of major automakers, including General Motors, Ford, Chrysler, Nissan, Mazda, BMW, Honda, Toyota, and Volvo. We are also servicing parts required under the new GM T1XX platform. To see the full range of automotive rubber parts which CRGI can supply, please visit our Automotive & OEM Solutions page.

For more information about our automotive rubber parts, or to request a quote, please contact our sales department at