1). Material: Silicone, EPDM, NR, NBR, SBR, CR, IR, IIR, FPM, and so on

 2). Hardness: According to drawing or sample

 3). Size: The same as drawing or sample.

 4). Color: Black, gray, green, yellow, blue, red etc 

 5). Package: Inner in poly bags, outer packed in carton.

 6). Function: dust-proof, oil-proof,etc