Winsilicone is a silicone compression molding manufacturer in China for buyers sourcing custom solid HTV silicone OEM parts in Dongguan. We support projects from usable drawings and in-house CNC tooling through sampling and production.
Who this page is for
This page is for product teams sourcing solid HTV silicone parts at low–medium volumes, including early production runs, thicker sections and large flat parts. Our factory in Humen, Dongguan has 2,000+ sqm, 100+ employees, 15 engineers, in-house CNC tooling and a testing lab. We have provided OEM/ODM manufacturing since 2014, and the factory is ISO 9001:2015 certified.
When compression molding is the better fit
Compression molding usually offers cheaper tooling and suits low–medium volumes, walls thicker than about 8–10 mm, large flat parts, high-hardness compounds, and market tests or first runs under about 10,000 pieces per year. Read the full compression molding versus LSR comparison.
LSR is usually preferred for tighter tolerances, less flash, thin walls, micro features, high annual volumes, or medical, infant-contact and tolerance-critical parts. Review our LSR injection molding capabilities when those requirements drive the decision.
Tooling and unit-cost example
One published comparison uses compression tooling at about USD 1,200 with a unit cost around USD 0.42, versus LSR tooling at about USD 4,500 with a unit cost around USD 0.19. This is an illustrative example, not a quotation: exact numbers depend on cavity count and geometry. For a typical medium part, the break-even point often falls around 20,000–50,000 pieces per year.
Materials and hardness
Available options include food-grade silicone with FDA or LFGB options, medical-grade silicone and industrial-grade silicone, commonly from 10 to 80 Shore A. Use the food-grade versus medical-grade silicone guide and the Shore A hardness guide when preparing your specification.
MOQ and lead times
- MOQ: for standard items, MOQ typically starts at 1,000–3,000 pieces; prototypes and trial orders can be smaller. Contact us for a tailored quote.
- Mold development: typically about 15–25 days.
- Mass production: often about 20–35 days after sample approval.
- Quotation: within 24 hours after we receive usable STP, IGS or PDF drawings.
Best for / Not ideal
Best for compression molding
- Low–medium annual volumes
- Thicker sections and large flat parts
- High-hardness solid silicone compounds
- Market tests and first production runs
Consider LSR instead
- Tight tolerances and less flash
- Thin walls and micro features
- High annual volumes
- Medical, infant-contact or tolerance-critical parts
Brand note
Winsilicone is the brand used for English-speaking buyers, and Dongguan Tongsheng Electronic Technology Co., Ltd. (东莞通胜 / Tongsheng Silicone) is the legal entity. They are the same factory in Humen, Dongguan.
For an example of a product category that may use compression or LSR as volume changes, see our custom silicone teether manufacturing page. You can also review the existing factory certifications section.