M6 9mm dia Thermoplastic hygienic blue seal washer

What are blue seal washers in hygienic design?

Hygienic design seal washers are precision-engineered components specifically designed to meet the stringent requirements of hygienic applications. These seal washers are intended for use in conjunction with either the hexagon head bolt WDS 7661 or hexagon nut WDS 7662, making them an integral part of hygienic fastening systems.

One of the standout features of these seal washers is their cleaning-optimized geometry, which facilitates thorough and efficient cleaning processes. Additionally, they boast an exceptionally smooth surface finish, with a rating of Ra ≤ 0.8 µm, ensuring minimal surface irregularities that could harbor contaminants.

These seal washers are manufactured using Thermoplastic material that complies with both EU10/2011 and FDA standards, ensuring their suitability for use in the food and pharmaceutical industries, among others. The Thermoplastic material, known as POM, is resistant to a temperature range spanning from -20°C to +100°C, offering reliability in diverse operational conditions.

A distinct advantage of these seal washers is their foodstuff-conforming material, which underscores their appropriateness for hygienic environments. They are available in an ultramarine blue version (RAL5002), which provides visual differentiation and aesthetic appeal.

These sealing washers are not suitable for applications involving highly acidic cleaning solutions with a pH below 4, or oxidizing agents. Users are encouraged to assess the compatibility of the Hygienic Design fasteners with their specific applications, taking into account factors such as temperature, cleaning agents, and product media. Routine inspection and replacement, as needed, are recommended to maintain optimal performance.

Industries that can benefit from these hygienic design seal washers include the food and beverage industry, pharmaceutical manufacturing, and any application where maintaining a high level of hygiene and cleanliness is paramount. These washers are particularly valuable in environments where compliance with strict food and drug safety regulations is essential.

Alternative terms for hygienic design seal washers may include "Hygienic Seal Washers," "Food-Grade Seal Washers," or "Sanitary Seal Washers."