This soft paint mask material allows caps to stretch to fit over unusual sizes. Hi temp silicone won't crack, harden or bleed. When used as a paint mask the paint will not stick to the caps; this allows them to be reusable. Paint masks are high-temperature resistant up to 315 Celesius / 600 Farenheit. Color coded for increased visibility and sorting during reuse. Colors may vary. Clear is still available on most parts.