Bung Washer cum Processor

Rubber Stoppers Bungs (electrometric closures for drug containers) are mainly used in stoppering vials and it is necessary to sterilize these as they are in direct contact with the final product. Though the trend of using pre-sterilized bungs from the market is still prevalent, their viability is still a question, owing to the various handling & transportation issues leading to questions on sterility.
Bung Processor cum steam sterilizer enables customers to reap benefits of ‘washing and sterilizing’ from single equipment. The bungs are loaded into a ‘drum’ and later placed into the sterilizer. The entire operation is done via PLC where in the pre-set program determines the wash sequence (Eg. Detergent Wash, WFI Wash & Silicon Treatment) followed by a final sterilization using HPHV cycle. This ensures complete sterility for the bungs. These bungs can later be unloaded in “sterile pouches/ bags” and transferred to the filling room, usually under laminar air flow conditions.

Lodha has designed a unique ‘drum’ that has the capability for auto unloading of the bungs, which eliminates the intermediate ‘handling’ of bungs. Also, with expertise you can look forward to special feature like preservative & Hot Air treatment with HEPA Filters for enhanced results.

Technique used:

The stages of bung processing that will be addressed will be loading, washing with detergent, rinsing, siliconization, sterilization and drying.

Applications:

Used extensively in pharma and rubber industry

Bung Washer cum Processor FAQs


It is a specialized GMP machine that washes, silicones, and sterilizes rubber stoppers used in injectable vials — ensuring contamination-free sterile closures.

The process includes pre-wash, detergent wash, WFI rinsing, silicone treatment, and final steam sterilization — all inside a closed GMP-compliant chamber.

Unprocessed closures can introduce particulates, microbes, or chemicals into injectable drugs — leading to recalls and regulatory penalties.

Bromobutyl and chlorobutyl stoppers, aluminum seals, rubber-coated closures, and syringe components of various sizes.

Yes — primary packaging components must be washed and sterilized using validated processes as per regulatory guidelines.

It ensures smooth stoppering on high-speed filling lines and prevents sticking without affecting sterility.

Yes — for sterile herbal injections and liquid formulations requiring rubber closures.

WFI ensures no endotoxins or contaminants are introduced during the final rinse stage.

A complete cycle takes 60–120 minutes depending on capacity and validated SOP parameters.

Product-contact parts are SS 316L with electropolished finish; outer body is SS 304.

Yes — includes validated cycles, 21 CFR Part 11 compliance, and IQ/OQ/PQ documentation.

Available from 5 kg to 100+ kg per batch with custom configurations.

Yes — sterile transfer systems allow direct integration with automated filling lines.

Pharma-grade non-ionic detergents validated for rubber compatibility and low endotoxin levels.

Saturated steam at 121°C ensures SAL of 10⁻⁶ before transfer to filling area.

IQ, OQ, PQ, BI testing, cleaning validation, and silicone uniformity studies.

Ensures rubber closures are clean and microbiologically safe for premium liquid cosmetic packaging.

Automated systems provide reproducible, validated cycles and eliminate contamination risks from manual handling.

Clean after each batch, monthly preventive maintenance, and annual full revalidation.

Consider batch size, bung types, regulatory target market, utilities, integration needs, and future scalability.

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