Plastic Insert
Your Professional Plastic Insert Supplier!
As a professional plastic insert supplier, Bai Ye Industrial Co., Ltd. specializes in manufacturing high-quality plastic inserts for furniture and hardware applications. All products are SGS certified and produced under strict quality control.
Quality Control
All products are SGS tested and manufactured under an ISO 9001 certified quality management system, with compliance to California Proposition 65 and other applicable international standards.
Advanced Equipment
Equipped with essential testing facilities, including tensile testing, caster durability (push-pull), vertical impact, and rebound testing, to ensure stable and consistent product performance.
Responsive Service Support
We provide clear installation guidance, respond to technical issues within 24 hours, and supply replacement parts during the warranty period.
Professional Team
An experienced team works closely with customers to understand requirements and deliver consistent, application-oriented solutions.
What Is a Plastic Insert?
Plastic inserts are plastic functional components installed via pressing or clipping into substrates, designed for component connection and assembly in products such as furniture, casters, metal tubes, and industrial equipment.
Benefits
Secure Connection
Plastic inserts fill installation gaps, ensuring a secure connection between the caster and the column, preventing wobbling and detachment.
Double Protection
Reduces caster vibration and impact, avoids direct contact between metal parts, and protects pipes and casters from wear and odor.
Lightweight Design
Lighter than metal inserts, reducing equipment load and saving on raw materials and bulk purchasing costs.
Easy Installation
No complicated tools required; simply press the plastic insert into place or clip it in place, compatible with various caster installation needs.
Application

-
Furniture Frames
Plastic inserts are used for chair, table, and cabinet frames, enhancing structural stability while protecting the ends of metal or wooden tubes.
-
Casters & Leveling Feet
Used in caster and leveling foot installations, plastic inserts provide a secure mounting base, improving connection strength and preventing loosening over time.
-
Metal Tube Assemblies
Plastic inserts ensure a tight fit in both round and square tube assemblies, reducing wear and maintaining reliable connections.
-
Industrial Equipment
For machinery and support structures, plastic inserts help maintain long-term assembly stability and consistent performance under load.
Customization
Customization Process: Requirements Communication → Specification Confirmation → Sample Making → Mass Production (One-on-One Collaboration).
|
Customization Item |
Customizable Options |
|
Plastic Material |
PVC, PP, PE, Nylon (PA), Glass Fiber, PU, Polyester, Melamine, Urea Resin. |
|
Tube Type |
Round Tube, Square Tube. |
|
Tube Dimensions |
Outer Diameter (OD), Inner Diameter (ID), Wall Thickness. |
|
Insert Dimensions |
Insert Diameter, Insert Length, Structural Profile. |
|
Thread Standard |
Imperial Thread, Metric Thread. |
Specification
|
Model |
Inside Dimensions |
Outside Dimensions |
Height |
Capacity |
Lip |
|
4156 |
22" |
24-1/2" |
25" |
38 gal |
Offset |
|
4158 |
16-3/4" |
17-1/2" |
29" |
25 gal |
Offset |
|
4160 |
11-1/2" |
12" |
30-1/4" |
12 gal |
Offset |
|
4162 |
15" |
16" |
13" |
4 gal |
Offset |
|
4164 |
18" |
19" |
29" |
33 gal |
Offset |
|
4166 |
22" |
24" |
37" |
60 gal |
Offset |
|
4168 |
22-1/2" |
24" |
26" |
42 gal |
Offset |
|
4170 |
23" |
25" |
36" |
64 gal |
Offset |
|
4172 |
18" |
20" |
24" |
20 gal |
Offset |
|
4174 |
25" |
27-1/2" |
27-1/4" |
50 gal |
Round |
|
4176 |
26-1/2" |
29-1/2" |
35" |
70 gal |
Round |
|
4176L Plastic Liner Lid |
- |
- |
- |
- |
- |
|
4178 |
20-3/4" |
24-1/2" |
16" |
x |
x |
|
4178L Plastic Liner Lid |
- |
- |
- |
- |
- |
|
4180 |
19-1/2" |
22" |
30" |
32 gal |
Round |
|
4182 |
21-3/4" |
25" |
26-3/4" |
30 gal |
Round |
|
4184 |
21-1/2" |
23" |
27" |
25 gal |
Offset |
|
4186 |
18-3/4" |
21-1/4" |
33" |
36 gal |
Round |
Packaging and Shipping
|
Packaging |
Wooden box, PE film. |
|
Transportation methods |
Road transport, rail transport, sea transport, air transport. |
Our Certificate
In the past 45 years, Bai Ye still persisted in guaranteeing quality. Not only do we have complete internal testing machines, but most of our products have passed the SGS test since 2006. In 2017, we passed the ISO- 9001, California Proposition 65, and other international certifications.



FAQ
We're professional plastic insert manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to buy discount plastic insert for sale here and get quotation from our factory. For price consultation, contact us.
Round Threaded Inserts, , Square Caster Socket









