Environmental Sealing – Flat Gaskets, O Rings
Kemtron stock many types of elastomeric materials for flexible environmental sealing but specialising in silicones, fluorosilicones, solid and sponge that meet UL94V-0 and low smoke/ low toxicity. Other materials include Poron™ polyurethane, Neoprene™/chloroprene, EPDM etc. Materials can be supplied as sheet, strip, laminated, self adhesive backed or die cut to complex shapes. Liquid RTV silicone can be applied as a form in place gasket direct to customer’s hardware.
Flat gaskets can be cut by rule die, kiss cut or more complex shapes by water jet cutting. Compression stops or collars can also be incorporated, this leads to reduced hardware costs and negates the need for fixings to be torqued to prevent over compression and damage to the gasket. Self adhesive backing can be applied to the materials prior to cutting.
Extruded profiles include cords, tubes, D shape, hollow D, P shape and bespoke profiles to special order. Flat strips can extruded or slit from sheet. Materials include silicones, fluorosilicones, PoronTM urethane foams, EPDM, Neoprene™ etc. Extrusions can be supplies as continuous length or fabricated into “O” rings or more complex gaskets.
Silicone 'O' Rings
Kemtron specialises in the manufacture of bespoke “O” rings specialising in silicones and fluorosilicones. Made from extruded sections cut to length and the two ends joined by vulcanisation to ensure a durable bond and maintaining the integrity of the seal. Sections and materials available are sponge, hollow tube, solid, D shape, rectangular etc. Rectangular picture frame gaskets with mitred corners can also be made in this way.
Kemtron Form-in-Place (FIP) Elastomer compounds are directly dispensed onto component hardware or enclosure via a pressurised fluid dispensing system on a numerically controlled XYZ table to form a gasket for dust and moisture sealing. The dispensing machine deposits the gasket by following a pre-determined CNC path to provide accuracy and repeatability.