O-ring procurement: Our production control points are provided for your reference
O-type sealing rings are widely used in medical equipment, electronic and electrical appliances, automotive industry, hydraulic and pneumatic systems, etc. The sealing performance directly affects the safe operation and service life of the equipment. As a purchaser, the two things you are most concerned about are: whether the size accuracy is sufficient and whether the batch stability is good. Below, from the production perspective, we will introduce how we control these two aspects.
1、Mold Precision and Material Selection
The size and material of the O-ring are the fundamental factors determining the sealing effect.
Mold processing: The molds are manufactured using CNC processing equipment to ensure the accuracy of key dimensions such as inner diameter and wire diameter. Before the new molds are put into production, a trial mold verification will be conducted to confirm the stability of the dimensions, and then mass production will commence.
Rubber material matching: Based on the customer's usage environment (such as the medium it comes into contact with, temperature range, pressure level), select the appropriate rubber material. Different fields such as medical and electronics have different requirements for material purity and medium resistance. We will match according to the actual working conditions and will not uniformly apply a single standard.
Edge control: After vulcanization molding, the excess edges are removed through freezing trimming or manual trimming to ensure that the sealing surface is smooth and free of burrs, without affecting assembly and sealing performance.
It should be noted that the requirements for rubber hardness vary depending on the specific working conditions. Before purchasing, it is recommended to clearly specify the application pressure and medium type in order to select the appropriate hardness grade.
II. Process Inspection and Batch Traceability
When it comes to bulk purchasing, the biggest concern is the significant differences in size or material among different batches. We maintain stability through the following methods:
Online sampling inspection: During the production process, products are randomly selected at regular intervals. Projectors or optical measuring instruments are used to measure key dimensions. Any deviations are promptly adjusted by modifying the molds or process parameters.
Hardness and compression permanent deformation testing: For each batch, samples are randomly selected in proportion. The hardness and compression permanent deformation indicators are tested to ensure that the sealing ring can still rebound after being subjected to long-term compression.
Batch retention and traceability: Samples are retained for each batch of products and the production batch number is marked on them to facilitate subsequent quality traceability. Test reports are attached when different batches are shipped.
Summary and Selection Suggestions
When purchasing O-ring seals and related rubber and plastic sealing components, it is recommended to follow the steps below for confirmation:
Clarify the operating conditions: specify the temperature range, the type of medium in contact, the working pressure, and whether specific standards for the medical or electronic industries need to be met.
Confirm the dimensional accuracy: Request the size inspection report of the recent batch, and observe the tolerance control level of the inner diameter and wire diameter.
Sample trial assembly: Small-scale sample actual assembly test to verify the sealing effect and installation smoothness.
Jiangsu Mingke Precision Rubber and Plastic Technology Co., Ltd. specializes in the production and research and development of O-ring seals, medical sealing rubber and plastic products, and electronic sealing rubber and plastic products. We welcome inquiries based on provided drawings or samples to discuss technical requirements.
Contact Information:
Jiangsu Mingke Precision Rubber and Plastic Technology Co., Ltd.
Contact person: Mark Gu
Telephone: 0510-81814868 0515-82726999 0515-8259666
Fax: 0515-82726998
Website: www.mincorubber.com
Email: sales@mincorubber.com
Postal Code: 22430
Contact Address: No. 31, Chunhui Road, Chuandong Industrial Park, Sheyang County, Yancheng City, Jiangsu Province
O-ring, O-ring procurement, O-ring supplier, Jiangsu Mingke Precision Rubber and Plastic Technology
