The best replacement for rubber is silicone.

The best alternatives to rubber are rated as following:

★★★★★	silicone
★★★★★	pvc air hose
★★★★	polyurethane
★★★★	metal valve stems
★★★★	plastic
★★★	polyurethane bushings
★★★	wood mulch
★★★	latex
★★★	synthetic rubber
★★	poly bushings
★★	plastic case
★★	leather sole
★★	plastic phone case
★★	cork gaskets
★★	vinyl hose
★	foam speaker surrounds
★	eraser
★	cork gasket
★	granulate talon grips
★	urethane bushings
★	natural rubber
★	silicone vacuum hose
★	lightning
★	cork underlayment
★	urethane
★	neoprene
	granulated
	carbon rubber
	rubber
	foam underlay
	silicone hoses
	universal rubber
	polyurethane suspension
	resin
	silicone cell phone cases
	carpet floor mats
	teflon
	polyurethane air hose
	silicone rubber
	epdm
	sbr

Your alternative for rubber is not listed? Suggest!

Speaking about rubber, one probably shouldn't forget about high coefficient of friction.

Other search terms related to rubber and their ratings are:

★★★★★	high coefficient of friction
★★★★★	asphalt
★★	silicone

You have in mind a companion for rubber and it is not yet here? Propose!

Google Trends

Scale is based on the average worldwide traffic of rubber in all years. Click on graph for more.

rubber

silicone

pvc air hose