CTS FKM Curved-End Rubber Watch Strap 18mm 19mm 20mm – Butterfly Clasp

Give your compatible watch a fitted sport-style upgrade with this CTS FKM curved-end rubber strap. Offered in 18mm, 19mm, and 20mm connection widths, the molded curved-end profile is designed to follow the case shape of selected watches using compatible curved lug geometry.

Durable FKM fluororubber provides a flexible and comfortable feel for everyday wear, while the cut-to-size (CTS) construction lets you progressively shorten the strap to suit your wrist. The strap is completed with a stainless steel butterfly folding clasp for a balanced and secure closure.

Key Features

• Durable FKM fluororubber construction
• Molded curved-end profile for compatible watch cases
• Cut-to-size (CTS) design for customized wrist adjustment
• Available in 18mm, 19mm, and 20mm connection widths
• Stainless steel butterfly folding clasp
• Flexible construction for comfortable everyday wear
• Resistant to everyday moisture, sweat, UV exposure, and wear
• Multiple colors for sport, casual, and everyday watch combinations

Compatibility

This replacement strap is designed for selected watches using a matching curved-end case and spring-bar configuration.

• 18mm: Compatible with selected watches using a matching 18mm curved-end connection
• 19mm: Compatible with selected watches using a matching 19mm curved-end connection
• 20mm: Compatible with selected watches using a matching 20mm curved-end connection

Supplier information references compatibility with selected watches from brands such as Tissot, Omega, Seiko, and others. Compatibility depends on the individual watch case design.

Important: Curved-end straps are case-dependent. A matching lug width alone does not guarantee fit. Please check your watch model, lug width, spring-bar position, and curved case profile before ordering.

This strap is not intended as a universal straight-end replacement strap.

This is a third-party replacement watch strap and is not manufactured, sponsored, or endorsed by any watch brand referenced above. Watch not included.

Choose Your Size

Cut-to-Size Adjustment

The CTS system allows the strap to be shortened at the clasp side for a cleaner and more personalized fit. Adjustment should be completed gradually because removed sections cannot be reattached.

• Determine your approximate wrist fit before cutting
• Trim only one adjustment section at a time
• Test the strap after each adjustment
• Adjust both sides carefully to keep the butterfly clasp comfortably centered

Important: Once the strap has been cut, trimmed, or permanently modified, the removed sections cannot be restored and the product may no longer qualify for a change-of-mind return. Please confirm the fit before cutting.

Specifications

• Item Type: Replacement Watch Strap
• Material: FKM Fluororubber
• End Design: Curved End
• Fit Type: Case-Dependent Curved Fit
• Adjustment Type: Cut-to-Size (CTS)
• Connection Widths: 18mm / 19mm / 20mm
• Untrimmed Length: Approx. 95mm + 95mm (supplier specification)
• Clasp Type: Butterfly Folding Clasp
• Clasp Material: Stainless Steel
• Product Weight: Approx. 40g
• Colors: Army Green / Black / Brown / Grey / Khaki / Orange / Red / Royal Blue / White
• Gender: Unisex
• Condition: New

What's Included

• 1 × CTS FKM Curved-End Rubber Watch Strap
• 1 × Stainless Steel Butterfly Folding Clasp
• Watch not included

Care Instructions

• Clean the strap periodically with fresh water and mild soap
• Rinse after prolonged exposure to sweat or salt water
• Dry with a soft cloth before storage
• Avoid contact with harsh solvents or abrasive cleaning products