The present invention relates to a polymeric composition which has an excellent combination of properties for use in making seals and gaskets for utilization in appliances, automotive applications, and building applications, such as window
glazing gaskets. These polymeric compositions offer excellent dimensional stability, low
compression set, outstanding sealing characteristics, low temperature flexibility,
heat resistance and ultra-
violet light resistance. The present invention more specifically discloses a polymeric composition having excellent characteristics for utilization in manufacturing seals and gaskets including dimensional stability, low
compression set and outstanding sealing characteristics, said polymeric composition being comprised of a blend of (A) a
thermoplastic resin selected from the group consisting of
polypropylene,
polyethylene, poly
phenylene ether,
polystyrene, and
styrene containing
copolymer resins, (B) an elastomeric
polymer selected from the group consisting of block
copolymer comprising a first polymeric block that is comprised of repeat units that are derived from a vinyl aromatic
monomer and a second block that is comprised of repeat units that are derived from a conjugated diolefin
monomer, wherein the repeat units in the second block are hydrogenated, and wherein the repeat units in the second block are elastomeric in nature, and a crosslinked olefinic
elastomer, (C) a high molecular weight crosslinked
diene elastomer comprised of repeat units that are derived from
conjugated diene monomer selected from the group consisting of 1,3-butadiene and
isoprene, wherein the high molecular weight
diene elastomer has a weight average molecular weight of at least about 200,000, and (D) an oil.