Sponge rubber.  Sold per metre 
Base Width 19mm, Overall Height 15.5mm

Austin A40 Cambridge 1955 - 1958
Austin A90 / A95 / A105 Westminster 1955 - 1959
Austin Healey 100/4, 100/6, 3000 1956 - 1957
Datsun 1962 - 1966 Fairlady
Datsun 1967 - 1969 2000
Ford Cortina Mk1 1963 - 1967
MG Magnette ZA / ZB 1954 - 4959
Wolseley 6 / 90 ( firewall strip )