Storage and Cleaning of Suction Cups

Protection coat on suction pads

A bright, whitely coat on suction pads is often to protect them against premature aging and damaging by ozone. This coat does not affect the funtionality of the suction pad. If this substance is optically disturbing it can be removed from the lip seal or the whole suction pad under regard to the specified cleaning advices below.

Cleaning notes for suction pads (based on DIN 7716)

Suction pads can be cleaned with soap, warm water and eventually a soft brush. Dry at room temperature. The use of a surface-active cleaning solvent (neutral pH-value) in combination with mechanical processing is the best solution to clean suction pads. We recommend the use of a soft brush or ultrasonic device to clean the surface of the suction pad. The dirt will be suspended by means of the tensides in the solvent. Connections of rubber parts and metal can be cleaned by using a mixture of ethanol and glycerine at a ratio of 10:1. After longer storage times (6-8 months) the suction pads can be cleaned with a soda bicarbonate solution (1,5 %). Keep in mind to rinse off residues of the solution with clear water. Under no circumstances pure glycerine or solvents such as trichloroethylene, carbon tetrachloride or hydrocarbons should be used for cleaning. The use of vinegar-based cleaning products or sharp objects, metal brushes or abrasive paper is also prohibited.

Storage recommendations for suction pads (based on DIN 7716)

Suction pads have to be stored in a cool (0°C to +1 5°C, never more than 25°C ), dark, dry and weatherproof place free of dust as well as protected against ozone and air draught. Also ensure that they are not subject to mechanical forces. Exposure to ozone, light (particularly UV), heat, oxygen, moisture and mechanical stress can shorten the lifetime of suction pads.

To facilitate compliance with the foresaid storage notes please follow the storage instructions carefully:

  • Suction pads have to be stored in a closed container. After taking out partial quantities ensure that the container is relocked. The use of an air tight sealing PE-bag will have supportive effect. Please keep in mind that suction pads made of Vulkollan VU1 are an exception to this, because any humidity inside the bag can cause a post hardening of the material. Corrective measures can be perforated bags or the use of drying agents.
  • Tension-free storing. Suction pads have to be stored without any tension on the pads, free of mechanical stress. Mechanical stress can cause a deformation of the suction pad, especially suctions pads with a thin sealing lip as well as suction pads with corrugations. Low boxes, appropriate stacking with low stacking heights and if necessary intermediate layers are recommended.
  • Suction pads made of Elastodur have to be packed without any pressure on the pad especially when resending it. We recommend the use of a small box.
  • Other substances such as solvents, fuels, lubricants, chemicals, acids, desinfecting agents etc. which are not 100% sealed must not to be stored in the same room as the suction pads.

In case of absolute compliance with the points mentioned above storage times for suctions pads of 2 to 4 years (depending on the material) can be realized. Due to the versatile influence of the different ambient conditions the storage times cannot be guaranteed.