MHB Seals


Ph: 585/924-2186

The multi-hollow bulb (MHB) seal line offers both the low closing force of a hollow bulb seal and the long-term resiliency of a foam-filled seal at a price point between traditional hollow bulb seals and foam-filled seals, the manufacturer states. During early stages of compression, the MHB seal requires minimal force. At later stages of compression, the outer bulb makes contact with the inner bulb and closing forces build rapidly to provide excellent sealing pressure against the mating surface, making the product extremely effective against air and water infiltration, the company explains. Strategic placement of a bulb inside a bulb also creates a three-chambered structure in the compressed state to deliver improved thermal and sound abatement properties over standard hollow bulb seals. By adjusting the relationship between the inner and outer bulbs, designers can fine tune preferred closing forces and seal pressures created at the final compression point for specific applications, it is noted. Standard and custom shapes are available in a variety of colors, including white, black, tan or brown. Heat weldable and fully recyclable, seals can also be produced with a low friction surface on the critical contact areas for sliding and tilting applications.