CAPMOULD
Heavy‑duty injection moulds engineered for motor oil, lubricant, ATF, and hydraulic fluid bottles. Superior chemical resistance, high‑torque seal integrity, and lifetime durability up to 5 million cycles.
Request Your Quote NowFrom standard PCO 38mm motor oil caps to heavy‑walled 5L closures, our moulds handle the toughest automotive packaging requirements.
48 cavities, hot runner, cycle time 4.8s. Optimized for 1L & 4L oil bottles. Balanced filling with individual nozzle control.
32 cavities with integrated tamper band. Robust stripper plate ejection ensures perfect bridge integrity.
Electropolished S136 stainless steel resists aggressive synthetic oils and cleaning agents. Food‑grade hygiene optional.
Reinforced core design for caps requiring high opening torque. DLC coating on stripper plate for wear resistance.
Maximum productivity for global oil brands. Conformal cooling and balanced hot runner for weight variation < ±0.02g.
Your design, our expertise. Free DFM analysis included before manufacturing. Send us your 3D or sample.
Engine oil caps must withstand temperature fluctuations, aggressive additives, and consumer torque. Our moulds are built for this reality.
S136 / NAK80 steel with electropolishing prevents corrosion from synthetic oils and additives.
Multi‑point sealing geometry verified by Moldflow and 60°C oil leak tests.
Reinforced unscrewing mechanisms and hardened inserts for caps requiring >2.5 Nm opening torque.
Conformal cooling and balanced hot runners achieve cycles as low as 4.8 seconds.
Cavity‑to‑cavity variation < ±0.01 mm ensures consistent seal and tamper band integrity.
Quick‑change inserts allow cavity expansion from 24 to 72 in the same mold frame.
We select ASSAB S136 or NAK80 tool steel with vacuum heat treatment (HRC 50‑52). Combined with a triple‑lip sealing geometry, our moulds eliminate leakage even when caps are filled with hot motor oil or exposed to aggressive synthetic additives.
Our moulds produce tamper‑evident bridges that withstand consumer opening while being easy to break. The stripper plate is reinforced with DLC coating to manage caps requiring >2.5 Nm torque, ensuring millions of cycles without wear.
From 24 to 72 cavities, each cavity is individually fed by a controlled hot runner nozzle. Weight variation across all cavities stays within ±0.02g. Modular inserts can be replaced in under 15 minutes, maximizing uptime for high‑volume oil brands.
Click any image to enlarge. All caps produced from our moulds.
Click to watch full‑screen. See the speed, precision, and reliability of our moulds.
Every engine oil cap mould undergoes oil‑fill leak tests at elevated temperature before shipment.
Full dimensional report for all cavities.
Oil‑filling test with SAE 5W‑30 at 60°C.
Ensuring uniform material distribution.
Quality management system in place.
ASSAB S136 or NAK80 with vacuum heat treatment (HRC 50‑52). They provide excellent resistance against motor oil additives and cleaning solvents.
Advanced sealing geometry and 100% oil‑fill leak test with motor oil at 60°C before shipment.
Yes, send your 3D file or sample, and we will replicate or improve the design with DFM.
With proper maintenance, our engine oil cap moulds exceed 5 million cycles.
Andreas B., Plant Manager, Germany
Michael T., Operations Lead, USA
Carlos S., Engineering Director, BrazilSend us your cap drawing or sample for a free DFM analysis and quote. Response within 24 hours.
