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Liquid Silicone Rubber Plunger Seal, LSR Plunger for Auto Seal

Xiamen Better Silicone Co.,Ltd

Liquid Silicone Rubber Plunger Seal, LSR Plunger for Auto Seal

MOQ : 10000pcs

Price : 0.05USD/PC

Payment Terms : T/T

Supply Ability : 1000000PCS/MONTH

Delivery Time : 7-10DAYS

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Liquid Silicone Rubber Plunger Seal, LSR Plunger for Auto Seal

LSR Seal is the simplest part among seals, although it is the best and most efficient seal. The structure of sealing pat is very simple, for this reason , it could be used in many fields. It is widely used in sealing products such as acid resistance, alkaline resistance, many kinds of pumps. It is popularly used in sealing devices in petroleum, chemical, medicine, mobile manufacture, war industries, and metallurgy, printing and dying, food, mechanical and many other industry.


Process

The LSR molding process starts with proper part design. Anyone familiar with designing parts for injection molding should find designing an LSR part to be similar. However, the shrink rate on LSR is fairly high, and the material also tends to flash very easily during molding. Protomold helps mitigate challenges related to high shrink rates by planning appropriate tolerances and incorporating additional features into the mold design to help reduce flash. LSR typically fills thin wall sections with minimal challenges and is accommodating to variations in wall sections as sink is almost nonexistent.

Mold production

When an order is placed, Proto Labs will then design an LSR molding tool. Due to the flexible nature of LSR, parts are manually removed from the mold, and thus, ejector pins are not built into the mold design. Like a standard Protomold aluminum tool, an LSR molding tool is fabricated using a combination of CNC milling and CNC electrical-discharge machining (EDM) to create a high-temperature aluminum tool built to withstand the LSR molding process. After milling, the tool is polished by hand to customer specifications, which allows six standard surface finish options: PM-F0, PM-F1, SP-C1, PM-T1, PM-T2 or SPI-A2. Others may be available by request.

Part production

The finished tool is loaded into an advanced LSR-specific injection-molding press that is precision geared for accurate control of shot size to produce the most consistent liquid silicone rubber parts. LSR molding shares many similarities with conventional injection molding, but there are a few notable differences. Unlike thermoplastic resin, which is melted before injection, LSR is a two-part thermoset compound that is chilled before being injected into a heated mold and ultimately cured into a final part. Note that Protomold uses an automated meter mixing pump to assure the exact combination of the two-part compound; nothing is hand mixed. Since LSR is a thermosetting polymer, its molded state is permanent - once it is set, it can't be melted again like a thermoplastic.

Liquid silicone rubber is a free-flowing, shear thinning thermoset material that injects easily into a mold and is less prone to many defects like sink as compared to typical thermoplastic materials. However, LSR flashes extremely easily and into gaps as small as 0.0002 in. When designing a part for LSR, you should keep in mind best practices for tooling of standard plastic molds. Though the materials are different, the molds are constructed in a similar fashion.

Product Scope:

1) Liquid silicone medical part, as like the capsule, laryngeal mask capsule, oxygen mask, protective mast, catheter, balloon, medical belt etc.

2) Liquid silicone auto parts, silicone valve, O-ring, sealing part.

3) Liquid silicone electronics and industrial product, such as the watchband, mobile phone case.

4) LSR products, which can be with the insert, as like the plastic part, steel part etc. As sample: silicone diving mask, electric silicone drum Stick, silicone handle, silicone vibrators etc.


Quality Liquid Silicone Rubber Plunger Seal, LSR Plunger for Auto Seal for sale

Liquid Silicone Rubber Plunger Seal, LSR Plunger for Auto Seal Images

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