Cylinder Accessories

Everything that goes around a cylinder rather than inside it — boots, cam bands, jubilee band covers, carry handles, valve knobs and handwheels, Viton O-rings, oxygen-clean service kits, charging adapters and gas labelling. We stock DIRZone, Nautilus, XS Scuba, Beaver, XDEEP and Hollis. Most of it is sized on cylinder diameter rather than capacity, so measure before you order — or bring the cylinder into the shop and we will match the part to it.

Cylinder being carried by a cylinder attached to the cylinder neck

Expert advice
Talk to divers who use the kit we sell.
Servicing and repairs
Regulators, cylinders, drysuits, BCDs and computer batteries.
Rutland dive centre
A real shop in Oakham, with training and pool sessions.
UK delivery
Posted across the UK. Ask about lead times on special orders.

Measure the diameter, not the litres

Boots, bands, protective covers and nets are made to fit a cylinder's outside diameter. Two cylinders of the same capacity from different makers can take different parts, so measure across the widest point of yours, or check the manufacturer specification, before you order. If the cylinder can come to the shop with you, we will offer the part up against it and save you a return.

Valve spares and service parts

We carry handwheels, rubber knobs, spindles, springs, screw nuts, Viton O-rings and manufacturer service kits, including oxygen-clean kits for valves and for first and second stages that see enriched air or oxygen. Kits are specific to the part they are built for, so match by model and check the manufacturer specification rather than going on appearance. External parts are straightforward enough for most divers; valve internals, and anything still holding pressure, belong with a qualified technician.

Our guide to regular scuba gear servicing explains why keeping on top of this is worth the trouble.

Adapters and charging fittings

DIN-to-A-clamp adapters and charging adapters let fittings that do not natively match work together, but each one is specific to the fitting and to the pressure it is built for. Match the adapter to your valve and to the fill you intend, check the manufacturer specification, and if you are not certain what is on your cylinder, bring it in and we will identify it with you. Our Air and Gas Fills page covers what we need before we can fill anything.

Labelling what is in the cylinder

MOD decals and oxygen, argon and diluent stickers exist so that nobody picks up the wrong cylinder at the wrong moment. The maximum operating depth you mark on a cylinder comes from your own analysis of the fill and your training agency's guidance — our step-by-step guide to nitrox formulas walks through the arithmetic, and Enriched Air (Nitrox) Explained covers the background.

Not sure what you need?

Cylinder fittings are one of those areas where a photograph will not settle it. If you are between sizes, unsure of a thread, or replacing something you inherited with a second-hand cylinder, talk to us before you buy. Cylinders and valves themselves are in our Cylinders & Valves collection.

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Frequently asked questions

Almost all of it is sized on the cylinder's outside diameter in millimetres, not its capacity in litres — so two cylinders of the same volume can need different parts. Measure across the widest part of your cylinder, or check the manufacturer specification, before you order. If you can get the cylinder to the shop, we will offer the part up against it for you.

We do, including charging adapters used for filling. Adapters are specific to the fitting and to the pressure they are built for, so match the adapter to your valve and to the fill you intend rather than assuming one will cover everything — check the manufacturer specification. If you are not certain what is on your cylinder, bring it in and we will identify it with you.

We stock handwheels, rubber knobs, spindles, springs, screw nuts, Viton O-rings and manufacturer service kits, including oxygen-clean kits. External parts such as a knob or handwheel are within reach of most divers. Anything involving valve internals, or any work on a cylinder that still holds pressure, belongs with a qualified technician — if in doubt, bring it to us rather than guessing.

They mark what is in a cylinder and the maximum operating depth for that mix, so a cylinder is not picked up and breathed somewhere it should not be. We stock MOD decals alongside oxygen, argon and diluent labels. The MOD you write on a cylinder comes from your own analysis of the fill and your training agency's guidance — our step-by-step guide to nitrox formulas covers how it is worked out.