... rubber 2)different colors 3)custom made hole grommets 4)good quality, reasonable price Rubber Hole Grommets Sizeaccording to customers' specification(drawing ... ,FVMQ,FFKM,Aflas, etc.DuroSilicone: 20~80 Shore A, others 40~90 Shore AColorany color as PantoneTechnologymoulding, cheap mould costNote: each ... , please do not hesitate to contact us. Thanks.Some Rubber Hole Grommets as below: