Report Lost a small rubber bit - not sure what its called in New to Rev Flying? Posted June 15, 2011 My source of spares for a repair kit includes: Trying to make out which rubber ring you're talking about here, as suggested already. It could be one of those little rubber rings that stops the knot on the bungee cords from pulling through the sail. Plastic cup washers - size M4. But I'd be more inclined to think you might be talking about ....(since you mentioned you've an SLE) the end cap rubber ring (circled in pink) 3/8" tap washers - centre hole opened up. Or since you mentioned the LE it could be that vinyl bit that fits over the connector (circled in red) Rev spares available "Rev end caps - sandproof" - basically the same as the standard endcap but with the silicone rubber (?) sleeve. In packs of 2 with replacement bungee cord lengths. But its less likely that this would come off accidentally without a fair bit of persuasion!