A seal affixed to the mating surfaces of a truck’s cab and topper (or camper shell) prevents the ingress of water, mud, and air. This barrier, usually product of rubber, vinyl, or foam, creates a decent closure between the car and its add-on, safeguarding cargo and bettering passenger consolation. Examples embody adhesive-backed foam tape, bulb seals, and specialised gaskets tailor-made to particular truck and topper fashions.
Sustaining a safe seal between the truck mattress and its masking is essential for a number of causes. A correctly sealed topper contributes to a quieter, extra snug experience by decreasing wind noise and drafts. It protects cargo from injury as a result of moisture and mud infiltration, and it might even enhance gasoline effectivity by minimizing aerodynamic drag. The necessity for such sealing has existed so long as truck toppers themselves, evolving from easy felt or rubber strips to the extra subtle and sturdy supplies out there in the present day.