Technische Handelsonderneming  „NEDERLAND”  B.V.

Products  ::  Piston rings

Piston rings are sealing rings (washers) that ensure a perfect seal in cylinders. Piston rings prevent loss of oil, low compress or extreme wear. THN currently has approximately 3,500,000 piston rings in 20,000 different sizes and 80 models in stock. In addition, THN also stocks piston ring sets and the piston rings available from stock meet ISO specifications. Examples of applications for piston rings:   Combustion engines   Piston pumps Compressors Hydraulic and pneumatic cylinders Steam engines And a range of other machines The standard dimensions are from 14 mm to 2500 mm and the rings can be delivered in various materials such as:   Cast iron Bronze A selection of the types of piston rings carried by THN: C1 - Compression ring C2 - Taper faced ring C3 - Compression ring internally bevelled C4 - CCompression ring internally bevelled C2a - Top ring with thrust side recess C6 - Keystone (taper) ring C7 - Semi-keystone ring C8 - Taper faced ring CL - L ring S11 - Napier ring S13 - Conical Napier ring O21 - Oil ring O23 - Bevelled edge oil ring O25 - Bevelled edge oil ring WO25 - Spiral expander oil ring 3XO - Three-piece oil ring UF - UF oil ring       There are a range of possible special coatings and/or models: KA - The outer edges are smoothed KI - The inner edges are smoothed   D - Chrome coating   M - Molybdenum coating   T - Tin coating   P - Phosphor coating   The rings are also available with a range of joints: SS - Bevel joint BS - Lap joint HS - Hook lap joint GS - Gas tight joint E - Side joint Z - Internal notch

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