Closures Housing

3L Filters™ offers three closure options to suit a broad range of industries and process conditions. 3L Filters™ closures are designed to save time when opening and closing.


  • Stays attached when released
  • Flat gaskets and spiral wound seals available
  • Quick change

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Product Info


Thru-Bolt - for vertical and horizontal housings; suitable for any temperature or pressure; o-ring, flat gasket and spiral wound seals available
Swing Bolt - for vertical or horizontal housings; suitable up to 200°F (93°C); uses elastometer o-ring seal; bolting stays attached when released; quicker change out than thru-bolt closure
Easy Access Closure - click here for more information