Rubber Watch Bands

Rubber Watch Bands

Rubber is the most waterproof, most maintenance-free, and most technically capable watch strap material available. Where leather absorbs water and requires conditioning, and nylon retains a small amount of moisture after immersion, rubber is unaffected by freshwater, saltwater, chlorine, UV, body chemistry, and sustained submersion. It dries instantly, requires no care, and returns to shape after compression. For any watch worn regularly in or near water — diving, swimming, sailing, outdoor sport — rubber is the correct material choice.

CNS Watch Bands produces rubber watch bands across four distinct collections: FKM fluorocarbon rubber, silicone, tropical style — the vintage-inspired perforated dive strap — and cut-to-size with deployant clasp for a precision-fit finish with no excess tail. Available in 18mm, 19mm, 20mm, 21mm, and 22mm lug widths.

Full-Grain vs Processed — Why Material Grade Matters in Rubber

Not all rubber watch bands are equal. The two primary materials used in quality rubber straps are fundamentally different in performance:

FKM (fluorocarbon rubber) — the premium material used on professional dive watches from Omega, Rolex, and Tudor. FKM is resistant to heat, seawater, chlorine, UV, oils, and most chemicals. It does not attract dust, maintains colour stability and elasticity over years of active use, and does not crack or harden with age. The surface has a slightly matte, firm quality that suits sport and dive watches naturally. FKM is the correct choice for buyers who use their watch actively in demanding conditions.

Silicone — lighter, softer, and more flexible than FKM. Silicone has a smooth, almost frictionless feel against the skin and is available in a broader colour range than FKM. It is fully waterproof and highly suitable for everyday active wear and gym use, but slightly less resistant to extreme heat and industrial chemicals than FKM. The better choice for buyers who prioritise soft-touch comfort and colour range over maximum chemical resistance.

TPU (thermoplastic polyurethane) — used in the tropical style curved-end model specifically for its higher gloss finish, which more closely replicates the appearance of original 1960s rubber than FKM's matte surface. All other rubber strap styles in the CNS range use FKM or silicone.

The CNS Rubber Range — All Four Collections

FKM Rubber Watch Bands

The premium rubber collection — FKM fluorocarbon rubber in standard two-piece construction with buckle. Available in matte and textured finishes across a full colour range from matte black through grey, navy, and sport colours.

FKM is the default choice for serious dive watch owners. Its resistance profile covers every condition a watch is likely to encounter — seawater, chlorine, tropical heat, UV exposure, body sweat, sunscreen, and fuel. For watches worn regularly during diving, swimming, or demanding outdoor use, FKM removes every maintenance concern from the strap equation. Available at 18mm, 19mm, 20mm, 21mm, and 22mm.

For a wider discussion of when to choose rubber for sport watch bands, the sport collection covers the material decision by activity in detail.

→ Shop FKM rubber watch bands

Silicone Watch Bands

The lighter, more comfortable rubber alternative — silicone in standard two-piece construction with buckle. Softer and more pliable than FKM, with a smooth surface and a wider colour range including brighter and lighter tones that FKM does not produce as effectively.

Silicone is the practical everyday rubber choice — well-suited to gym wear, cycling, running, casual swimming, and any active use where the full chemical resistance of FKM is not required. For women's watch bands in rubber, silicone offers the most varied colour range and the softest feel. Available across all standard lug widths.

→ Shop silicone watch bands

Tropical Style Watch Bands

The vintage-inspired perforated rubber collection — tropical style watch bands in FKM and TPU, across basket-weave, honeycomb, and flat perforated textures. The design references the rubber straps originally issued on Rolex Submariner, Blancpain Fifty Fathoms, and Jaeger-LeCoultre dive references in the early 1960s — perforated for drainage, waffle-patterned on the underside for comfort, and tapered to suit the proportions of vintage dive watch cases.

Select CNS tropical style models are produced from genuine 1960s molds — most notably the curved-end model in TPU which directly replicates the original proportions and texture depth. The rest of the range uses molds developed from detailed vintage references to replicate the original design as faithfully as modern tooling allows.

The tropical style range suits vintage Rolex at 19mm, standard dive watches at 20mm, and larger sport watches at 22mm. For the full history and collector context of this strap design, see the tropical style collection page.

→ Shop tropical style watch bands

Cut-to-Size Rubber Watch Straps

The precision-fit rubber collection — cut-to-size straps in FKM and silicone, supplied at maximum length and trimmed with scissors to your exact wrist measurement. Closes with a deployant clasp rather than a standard buckle — no tail, no keeper rings, no compromise. The result is the cleanest rubber strap fit available: the strap ends exactly where the clasp begins, lies flush around the entire wrist, and stays that way.

Available in standard smooth FKM and the tropical style basket-weave texture — the cut-to-size tropical style strap combines the precision-fit construction with the vintage perforated aesthetic for a pairing that suits collector-grade dive watches at 20mm and 22mm particularly well.

→ Shop cut-to-size rubber watch straps

Choosing the Right Rubber Strap

What Watches Suit Rubber Watch Bands?

Dive watches — Omega Seamaster, Tudor Pelagos, Seiko Prospex, Rolex Submariner, Blancpain Fifty Fathoms. The natural home of rubber. FKM rubber for active diving; tropical style for collector and heritage wear.

Sport watches — any watch worn during running, cycling, swimming, or gym use where water resistance and maintenance-free performance are priorities. Silicone for lightweight comfort; FKM for demanding conditions. See the sport watch bands collection for a full activity-by-activity breakdown.

Pilot and field watches — rubber is a practical choice for field use where water exposure is likely and leather maintenance is inconvenient. Military nylon is typically preferred for field watches, but FKM rubber suits pilot and sport watches worn in rain and humid conditions equally well.

Dress-sport watches at formal occasions — the cut-to-size deployant construction elevates rubber into occasions where a standard rubber strap would look underdressed. The absence of tail and keeper, combined with the clean deployant fold, produces a strap finish that complements the quality of a luxury sport watch more appropriately than a standard buckle.

Sizing

Rubber watch bands are sized by lug width — the gap in millimetres between your watch's two lugs:

Frequently Asked Questions

What is the difference between FKM and silicone rubber watch bands? FKM is harder, more chemically resistant, and better suited to regular diving and demanding active use. Silicone is softer, lighter, and available in a wider colour range — better for everyday active wear and gym use where maximum chemical resistance is not required. Both are fully waterproof.

Are rubber watch bands waterproof? Yes — both FKM and silicone are fully waterproof and unaffected by freshwater, saltwater, chlorine, and prolonged submersion. Tropical style straps are equally waterproof, with perforations that allow water to drain through the strap rather than pooling beneath it.

What rubber watch band suits a vintage Rolex Submariner? The tropical style rubber strap at 19mm — the basket-weave perforated rubber was original issue on the Rolex Submariner in the 1960s before the Oyster bracelet became standard. It is the most historically accurate active strap for an early Submariner reference.

What is a cut-to-size rubber strap? A cut-to-size strap is supplied at maximum length — both pieces are trimmed with scissors to your exact wrist measurement. It closes with a deployant clasp rather than a buckle, producing a clean finish with no excess tail and no keeper rings. The result is the most precise-fitting rubber strap available.

All CNS Watch Bands rubber watch bands ship with quick-release spring bars where applicable. Standard delivery worldwide. 30-day return policy.