Rọba bụ ihe polymer na-agbanwe agbanwe nke ukwuu nke nwere mgbanwe a na-agbanwe agbanwe.

Ọ na-agbanwe agbanwe n'ime ụlọ okpomọkụ ma nwee ike imebi nnukwu mgbanwe n'okpuru ọrụ nke obere ike mpụga.Ọ nwere ike ịlaghachi n'ọnọdụ mbụ ya mgbe ewepụsịrị ike mpụga.

E nwere ọtụtụ ụdị rọba gụnyere EPDM, Neoprene Rubber, Viton, Natural Rubber, Nitrile Rubber, Butyl Rubber, Timprene, Synthetic Rubber, wdg.