Plastic washers / POM / MC Nylon / Bakelite / PEEK / Fibreglass【1-10 Pieces Per Package】 (WSJF25-16-2)

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Promotional pricing ends 30/11/2024
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MISUMI

Product Details:

Manufacturer part number: WSJF25-16-2

Brand: MISUMI

Price: Please contact the support for quotation

Delivery time: 6 Days

Technical Data:

Outer Diameter: 25 mm

Internal Diameter: 16 mm

Thickness and length: 2

Material: Fluororesin

Material Detail: Fluororesin

Order quantities extended (D-JIT)
Stock

(i)Remark

Quantity limit information: Due to lack of Polyacetal white, the quantity of PACK products (Type: PACK-WSJJ) that can be ordered is limited to 9 items or less. We apologize for any inconvenience caused. Thank you for your understanding.
Resin is a material that can be easily distorted, expanded or contracted due to temperature and humidity. Please take this into consideration when designing dimensions and storing.（Click here for material properties.）
Please check the content on our website as the PDF does not contain the most up-to-date information.

Part Number

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WSJF25-16-2

Drawing / Specifications
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Part Numbers
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Technical Information

Back to the Category Plastic Washers/Plastic Sleeves

Technical Drawing - Plastic Washers

Resin Washers/POM/MC Nylon/Bakelite/PEEK/Epoxy Glass:Related Image

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Available dimensions and tolerances can be found under the tab More information.

Basic Properties (e.g., material, hardness, coating, tolerance) - Plastic Washers

Type			Material		Color
Pkg.	Dimension Selectable	Dimension Configurable	Material		Color
PACK-WSJJ	WSJJ	FWSJJ	Polyacetal		White
-	WSJK	FWSJK	Polyacetal		Black
PACK-WSJM	WSJM	FWSJM	MC Nylon Standard Grade		Blue
-	WSJW	FWSJW	MC Nylon Standard Grade		Ivory
-	WSJD	FWSJD	MC Nylon Conductive Grade	CDR2	Black
-	WSJT	FWSJT	MC Nylon Conductive Grade	CDR6	Black
-	WSJB	FWSJB	Bakelite	Paper Base	Natural Color
-	WSJN	FWSJN	Bakelite	Cloth Base	Natural Color
-	WSJF	FWSJF	Fluororesin		White
-	WSJP	FWSJP	PEEK		Gray
-	WSJE	FWSJE	Epoxy Glass		Green

Material Properties >> P.141

When D ≥ 30 for WSJB, FWSJB, WSJN, FWSJN, WSJE and FWSJE, the D dimension tolerance will be 0/-0.3.

Further specifications can be found under the tab More information.

Composition of a Product Code - Plastic Washers

• Sold by the package

Part Number	-	V	-	T
PACK-WSJJ4	-	2	-	2

Part Number	-	V	-	T
WSJJ6	-	4	-	2

Part Number	-	D	-	V	-	T
FWSJN	-	D10	-	V5	-	T5.5

Alterations - Plastic Washers

General Information - Plastic Washers

Selection details of plastic washers/plastic sleeves

- Material: MC-nylon, polyacetal (POM), Bakelit, epoxy glass, polyether ether ketone (PEEK), fluoroplastic, polyslider, ceramic, polycarbonate (PC), polyamide (PA), polytetrafluoroethylene (PTFE), Duracon, Duranex, ABS, glass (lime-sodium glass)

- Outer diameter: 2 to 100 mm

- Inner diameter: 1 to 90 mm

- Thickness, length: 0.1 to 500 mm

- Forms: cylindrical, with collar, with pins, with countersunk bore, with guide, square washers

Description/Basics of plastic washers/plastic sleeves

Sleeves in general, are among the most commonly used machine elements to create a distance between two components. Plastic sleeves and ceramic sleeves offer added value compared to conventional metal collars.

Plastic sleeves and plastic sleeves with a collar have some advantages over their metallic counterparts. In addition to creating and maintaining a distance, they also have an insulating effect. The insulation effect refers to thermal insulation or electrical insulation depending on the material. In addition, their similarity to natural materials is greater than with metal sleeves. As a result, plastic washers and plastic sleeves (depending on the material) expand to the same extent under the influence of heat, such as wood or similar soft materials.

Plastic washers, as well as washers, enable an increase in surface compression. However, their resistance to pressure loads is lower depending on the material selected than that of a similarly large metal washer. For this purpose, the advantage of thermal and electrical insulation effects exists in plastic washers.

MISUMI also offers plastic washers and plastic sleeves with gliding properties. For example, washers and sleeves made of fluoroplastics are suitable for reducing friction resistances in hinge constructions. It should be noted that plastic sleeves do not replace plain bearings.

Polyether ether ketone (PEEK) has excellent thermal insulating properties. Depending on the strength and material composition, PEEK has a melting point of up to 300°C. It is therefore suitable, among other things, for insulating heating and cooling lines, for example. Due to the quality of the surface, the material has particularly good adhesive properties.

Polyacetal, also called POM, is characterized by its very good machinability and excellent mechanical properties. Polyacetal (POM) products are widely used in various branches of mechanical engineering.

At MISUMI you will find washers and sleeves made of various variants of MC Nylon. In addition to the standard version, a conductive and antistatic type is also offered. Thus, MC Nylon can be used in a wide variety of applications.

The different versions and shapes of the plastic washers and plastic sleeves allow utilising them in a wide variety of applications. Thus, plastic washers can be used, for example, as bearing mountings up to the assembly of printed circuit boards.

Application Examples

Plastic sleeve as thermally insulating spacer sleeve
(1) Plastic sleeves, (2) Cylindrical plastic sleeve, (3) Plastic washer, (4) Hexagon socket screws, (5) Washer, (6) Hexagon nut

Plastic sleeve as bearing ring
(1) Plastic sleeve with guide, (2) Rotary shaft, (3) Timing pulley, (4) Ball bearing (5) Bearing with housing, (6) Drive wheel

Part Number:

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Data to be displayed: 30; 45; 60

Part Number
WSJF25-16-2

Part Number	Minimum order quantity	Volume Discount	Standard Shipping Days ?	RoHS	Outer Diameter (mm)	Internal Diameter (mm)	Thickness and length	Material	Material Detail	Dimension Selecting Method	Sale Type
	1		6 Days	10	25	16	2	Fluororesin	Fluororesin	-	Sold Separately

Back to the Category Plastic Washers/Plastic Sleeves

Technical Drawing - Plastic Washers

Open the technical drawing in the new window

Specification Tables - Plastic Washers

■Sold by the package 1 package contains 10 pieces.

Part Number		V Selection								T Selection			PACK-WSJJ				PACK-WSJM
Part Number													Unit Price	Volume Discount Rate			Unit Price	Volume Discount Rate
Type	D												1 ~ 4 pkg(s).	5~9	10~19	20~30	1 ~ 4 pkg(s).	5~9	10~19	20~30
PACK-WSJJ PACK-WSJM	4	2								2
	5	2	3							2
	6	2	3	4						2
	8		3	4	5	6				2	3	5
	10		3	4	5	6	8			2	3	5
	12			4	5	6	8			2	3
	15					6	8	10	12	2	3
	20					6	8	10	12	2	3	5

For package, minimum order unit is 1 pack.
For orders of 31 or more identical packages, please request a quotation.

■Dimension Selectable
No specification available for those without value.

Part Number		V Selection													T Selection				Unit Price
Type	D	V Selection													T Selection				WSJJ WSJK	WSJM WSJW	WSJD	WSJT	WSJB	WSJN	WSJF	WSJP	WSJE
WSJJ WSJK WSJM WSJW WSJD WSJT WSJB WSJN WSJF WSJP WSJE	4	2													2
	5	2	3												2
	6	2	3	4											2
	8	2	3	4	5	6									2	3	5
	10	2	3	4	5	6	8								2	3	5
	12		3	4	5	6	8	10							2	3	5
	13			4	5	6	8	10							2	3	5
	14			4	5	6	8	10							2	3	5
	15			4	5	6	8	10	12						2	3	5
	16			4	5	6	8	10	12						2	3	5
	20			4	5	6	8	10	12	15	16				2	3	5
	25					6	8	10	12	15	16	20			2	3	5
	30						8	10	12	15	16	20	25		2	3	5
	35							10	12	15	16	20	25			3	5	10
	40							10	12	15	16	20	25	30		3	5	10
	50							10	12	15	16	20	25	30		3	5	10
	60									15	16	20	25	30		3	5	10				-			-	-	-

■Dimension Configurable
No specification available for those without value.

Part Number

Unit Price

0.5mm Increment (V3 or More)

0.5mm Increment

FWSJJ
FWSJK

FWSJM
FWSJW

FWSJD

FWSJT

FWSJB

FWSJN

FWSJF

FWSJP

FWSJE

FWSJJ
FWSJK
FWSJM
FWSJW
FWSJD
FWSJT
FWSJB
FWSJN
FWSJF
FWSJP
FWSJE

4.0~10
(0.5mm Increment)

0
(No Hole Machining)
2.0
2.6

3.0~58.0
(V≤D-2)

58.5~90.0
(V≤D-6)

2.0~ 5.0

5.5~10

10.5~20
(0.5mm Increment)

2.0~ 5.0

5.5~10

21~30
(1mm Increment)

2.0~ 5.0

5.5~10

31~40
(1mm Increment)

2.0~ 5.0

5.5~10

41~50
(1mm Increment)

2.0~ 5.0

5.5~10

51~60
(1mm Increment)

2.0~ 5.0

5.5~10

61~80
(1mm Increment)

2.0~ 5.0

5.5~10

81~100
(1mm Increment)

2.0~ 5.0

5.5~10

Alterations - Plastic Washers

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Basic information

Shape	Standard	Hole Type	Through Hole

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Basic Attributes

Outer Diameter(mm)
4

5

6

8

10

12

13

14

15

16

20

25

30

35

40

50

60
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Material
- MC Nylon
- Polyacetal
- Bakelite
- Epoxy Glass
- PEEK
- Fluororesin
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Material Detail
MC Nylon (EN MC501 CD R2 Equiv.)

MC Nylon (EN MC501 CD R6 Equiv.)

Bakelite (Fabric Type)

Bakelite (Paper Type)

Epoxy Glass

Fluororesin

MC Nylon

PEEK

Polyacetal
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Dimension Selecting Method
- Dimension Configurable Type
Clear
Sale Type
- Sold Separately
- Sold by the package
Clear
Type
- FWSJB
- FWSJD
- FWSJE
- FWSJF
- FWSJJ
- FWSJK
- FWSJM
- FWSJN
- FWSJP
- FWSJT
- FWSJW
- PACK-WSJJ
- PACK-WSJM
- WSJB
- WSJD
- WSJE
- WSJF
- WSJJ
- WSJK
- WSJM
- WSJN
- WSJP
- WSJT
- WSJW
Clear
Internal Diameter(mm)
0

2

2.6

3

4

5

6

8

10

12

15

16

20

25

30
Clear
Thickness and length
2

3

5

10
Clear
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Same day

5 Days or Less

6 Days or Less
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Optional Attributes

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Frequently Asked Questions (FAQ)

Question:
Do ceramic washers have the same strength as ceramic sleeves?: Answer:
Due to a radial lamination of the ceramic material, ceramic sleeves have a lower compressive strength than ceramic washers (vertically laminated). Detailed information and comparison values can be found here.
Question:
What is the thermal expansion of plastic sleeves and plastic washers?: Answer:
Plastic sleeves and plastic washers react sensitively to fluctuations in ambient temperature. The length of synthetic resin sleeves varies depending in a ratio of up to 1°C = 0.1 mm depending on the temperature . Details on the thermal expansion of other materials available at MISUMI can be found in this PDF.
Question:
Do you have washers made of a material that provide electric insulation?: Answer:
Most plastics have an electrically insulating effect. The level of insulation differs depending on the material. Polycarbonate has a very good electrically insulating effect. In addition to its good electrical insulating effect, it is also superior to most conventional plastics in terms of mechanical aspects.
Question:
Which material is suitable for both low and high temperatures?: Answer:
Polyether ether ketone (PEEK) and polytetrafluoroethylene (PTFE) have an operating temperature of approx. -50°C (PEEK), respectively -40°C (PTFE) and up to +250°C.