Sitec Silflex Silicone Neck Seal

The SILFLEX small silicone neck seal is soft, durable, and resistant to environmental degrading factors like heat or humidity—making it an excellent choice for divers in warm climates or anyone who wants a longer‑lasting seal.

Why SILFLEX is a strong pick

• Comfort and stretch: Silicone offers superior elasticity and a gentler feel on the skin than many traditional materials, helping the seal conform reliably without feeling tight or harsh.

• Better durability in heat and humid conditions: Unlike latex, silicone isn’t easily weakened by warm temperatures or moisture, so it holds up well in the tropics and during extended use. The product listing notes silicone seals are especially useful where latex breaks down quickly. Scuba Doctor

• Easy to replace and compatible with common systems: Designed for replaceable neck‑seal systems, this serves as a practical, straightforward upgrade or maintenance part for many drysuits.

• Small size fit: The small version is suitable for divers whose neck circumference or suit system requires the smaller seal dimension—be sure to match the correct size for best performance and comfort.

Best use cases

• Dry‑suit divers in warm or tropical climates

• Anyone who wants a seal that stays pliable and reliable over many dives

• Replacements during routine maintenance or when moving away from latex seals
  
  Neck circumference
  Small: 22cm to 30 cm (8.6 inch -11.8 inch)
  Standard: 28cm to 43cm (11 inch -16.9 inch)