[Clean & Pack] Retaining Ring C Type (External)

Brand :
MISUMI
Caution
- [Specification Change] The material of stainless steel products will be changed sequentially starting in July 2025. Please see here for details.
- There is a possibility that products and packages before and after the change may be mixed in the same shipment, but there will be no problems with use.
- Cleaning also removes rust prevention oil, which may make the product more susceptible to rusting than an uncleaned product. Please be careful about the application location and storage environment.
- Please check the content on our website as the PDF does not contain the most up-to-date information.
Product Description
Three types of cleaning methods are available: degreasing, precision cleaning, and electrolytic polishing + precision cleaning. They can be ordered from one piece with the standard part number.
This eliminates the need for customer cleaning or outsourced cleaning, reducing the amount of time and effort required.
This eliminates the need for customer cleaning or outsourced cleaning, reducing the amount of time and effort required.
■Part Number for Clean & Pack Products
| ·Degreasing (Anti-rust single packing) | : Part Number SL-□□ |
| ·Precision cleaning (Degassing double packing) | : Part Number SH-□□ |
| ·Electrolytic polishing + precision cleaning (Degassing double packing) | : Part Number SHD-□□ |
| Product Part Number | Cleaning Method | Packaging Type | Effects Compared to Uncleaned Product | Environment (Standard) | Process |
| SL-□□ | Degreasing | Anti-rust packing | Oil removal | General environment | Regular assembly process |
| Post battery assembly process | |||||
| SH-□□ | Precision cleaning | Degassing double packing | Oil removal Dust removal | Clean environment (Class 10 to 1,000) | Battery assembly process |
| LCD-related post assembly process | |||||
| In-vehicle camera assembly process | |||||
| SHD-□□ | Electrolytic polishing + precision cleaning | Degassing double packing | Oil removal Dust removal Outgas reduction | Vacuum environment Clean environment (Class 10 to 1,000) | Pre-semiconductor process |
| Liquid crystal deposition process | |||||
| Pre-OLED process |
■Notes
Cleaning also removes rust prevention oil, which may make the product more susceptible to rusting than an uncleaned product.
Please be careful about the application location and storage environment.
Cleaning also removes rust prevention oil, which may make the product more susceptible to rusting than an uncleaned product.
Please be careful about the application location and storage environment.

| Type | Body Material | Cleaning Method | ||||
| Material | Hardness | Cleaning Method | Cleaning Environment | Packaging Type | Packing Environment | |
| SL-STWS | SUS304-CSP Equivalent | 36 to 44HRC | Degreasing | General environment | Anti-rust packing | General environment |
| SH-STWS | Precision cleaning | Class 1,000 | Degassing double packing | Class 10 | ||
| SHD-STWS | Electrolytic polishing + precision cleaning | |||||
See the details of degreasing, precision cleaning, and electrolytic polishing shown at the bottom of the specification table.
Specification Table
| Part Number |
| SL-STWS6 |
| SH-STWS10 |
| SHD-STWS20 |
| Part Number | Retaining Ring | Reference: | Applicable Shaft (Reference) | ||||||||||||
| Type | No. | D3 | t | b (Approx.) | a (Approx.) | d0 (Min.) | d4 | d1 | d2 | m | n (Min.) | ||||
| Tolerance | Tolerance | Tolerance | Tolerance | ||||||||||||
| SL-STWS SH-STWS SHD-STWS | 4 | 3.6 | ±0.1 | 0.25 | ±0.03 | 0.7 | 1.4 | 0.7 | 9 | 4 | 3.7 | ± 0.06 | 0.3 | +0.10 0 | 1 |
| 5 | 4.5 | 0.4 | ±0.04 | 0.7 | 1.4 | 10.5 | 5 | 4.7 | 0.45 | 1.5 | |||||
| 6 | 5.5 | 0.8 | 2 | 12 | 6 | 5.7 | |||||||||
| 7 | 6.3 | 0.65 | 0.9 | 2 | 1 | 14 | 7 | 6.5 | 0.7 | ||||||
| 8 | 7.1 | 1 | 2.2 | 15 | 8 | 7.4 | |||||||||
| 10 | 9.3 | ±0.15 | 1 | ±0.05 | 1.8 | 3 | 1.2 | 17 | 10 | 9.6 | 0 -0.09 | 1.15 | +0.14 0 | 1.5 | |
| 11 | 10.2 | 2 | 3.1 | 18 | 11 | 10.5 | 0 -0.11 | ||||||||
| 12 | 11.1 | ±0.18 | 2.1 | 3.2 | 1.5 | 19 | 12 | 11.5 | |||||||
| 13 | 12 | 3.3 | 20 | 13 | 12.4 | ||||||||||
| 14 | 12.9 | 2.2 | 3.4 | 1.7 | 22 | 14 | 13.4 | ||||||||
| 15 | 13.8 | 3.5 | 23 | 15 | 14.3 | ||||||||||
| 16 | 14.7 | 3.6 | 24 | 16 | 15.2 | ||||||||||
| 17 | 15.7 | 3.7 | 25 | 17 | 16.2 | ||||||||||
| 18 | 16.5 | 1.2 | ±0.06 | 2.6 | 3.8 | 26 | 18 | 17 | 1.35 | ||||||
| 19 | 17.5 | 2.7 | 3.8 | 2 | 27 | 19 | 18 | ||||||||
| 20 | 18.5 | ±0.2 | 3.9 | 28 | 20 | 19 | 0 -0.21 | ||||||||
| 21 | 19.5 | 4 | 30 | 21 | 20 | ||||||||||
| 22 | 20.5 | 4.1 | 31 | 22 | 21 | ||||||||||
| 23 | 21.4 | 2.9 | 4.5 | 32.5 | 23 | 22 | |||||||||
| 24 | 22.2 | 3.1 | 4.2 | 33 | 24 | 22.9 | |||||||||
| 25 | 23.2 | 4.3 | 34 | 25 | 23.9 | ||||||||||
| 26 | 24.2 | 4.4 | 35 | 26 | 24.9 | ||||||||||
| 28 | 25.9 | 1.5 | 4.6 | 38 | 28 | 26.6 | 1.65 | ||||||||
| 29 | 26.9 | 3.5 | 4.7 | 39 | 29 | 27.6 | |||||||||
| 30 | 27.9 | 4.8 | 40 | 30 | 28.6 | ||||||||||
| 32 | 29.6 | 5 | 2.5 | 43 | 32 | 30.3 | 0 -0.25 | ||||||||
| 35 | 32.2 | ±0.25 | 4 | 5.4 | 46 | 35 | 33 | ||||||||
| 40 | 37 | ±0.4 | 1.75 | ±0.07 | 4.5 | 5.8 | 53 | 40 | 38 | 1.9 | 2 | ||||
| 45 | 41.5 | 4.8 | 6.3 | 58 | 45 | 42.5 | |||||||||
| 50 | 45.8 | 2 | 5 | 6.7 | 64 | 50 | 47 | 2.2 | |||||||
| 52 | 47.8 | 6.8 | 66 | 52 | 49 | ||||||||||
| 60 | 55.8 | ±0.45 | 5.5 | 7.2 | 75 | 60 | 57 | 0 -0.3 | |||||||
| 80 | 74.5 | 2.5 | ±0.08 | 7.4 | 8.2 | 97 | 80 | 76.5 | 2.7 | 2.5 | |||||
Cleaning Process·Degreasing (Part Number: SL-□□)
Working Environment: General environment
![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
| Alkaline warm pure water | Ultrasonic pure water cleaning after cleaning with pure water *3 times | Dry | Anti-rust single packing |
·Precision cleaning (Part Number: SH-□□)
Working Environment: Class 1,000 | Working Environment: Class 10 | |||||||
![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
Hydrocarbon cleaning Ro water cleaning | Wash with pure water (10 MΩ·cm) after high-pressure water jet cleaning (Ro water) | Use pure water (13 MΩ·cm) | Use nitrogen blow | Conducted on a clean bench in a Class 10 clean environment | ||||
·Electrolytic polishing + precision cleaning (Part Number: SHD-□□)
Working Environment: Class 1,000 | Working Environment: Class 10 | |||||||||
![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
Hydrocarbon cleaning Ro water cleaning | Electrolytic polishing with an electrolytic polishing layer according to the material | Wash with pure water (10 MΩ·cm) after high-pressure water jet cleaning (Ro water) | Use warm pure water (13 MΩ·cm) | Use nitrogen blow | Conducted on a clean bench in a Class 10 clean environment | |||||
Packaging Example| For degreasing: (Part Number: SL-□□) ![]() | For precision cleaning or electrolytic polishing + precision cleaning: (Part Number: SH-□□/SHD-□□) ![]() [ ! ]Both the first and second layer packaging are degassed. |
Cleaning Effectiveness / Recommended Environment for UseCleaning Method | Product Part Number | Packaging Type | Effects Compared to Uncleaned Product | Environment (Standard) | Use Case and Process |
|---|---|---|---|---|---|
| Degreasing | SL-□□ | Anti-rust packing | Oil removal | General environment | Regular assembly process |
| Post battery assembly process | |||||
| Precision cleaning | SH-□□ | Degassing double packing | Oil removal Dust removal | Clean environment (Class 10 to 1,000) | Battery assembly process |
| LCD-related post assembly process | |||||
| In-vehicle camera assembly process | |||||
| Electrolytic polishing + precision cleaning | SHD-□□ | Degassing double packing | Oil removal Dust removal Outgas reduction | Vacuum environment Clean environment (Class 10 to 1,000) | Pre-semiconductor process |
| Liquid crystal deposition process | |||||
| Pre-OLED process |










