Type 2100 Mechanical Seal
Our catalog model WM 2100 is built to the John Crane Type 2100 style: a compact rubber bellows seal. Standard sizes cover metric shafts from 10 to 100 mm and inch shafts from 3/8" to 4"; other sizes are built to order.
We build most John Crane seals, not only Type 2100: send the seal part number, a drawing or the old seal. All are equivalents, not sold as genuine OEM parts.
Operating limits · catalog model WM 2100
Drawing & dimensions
Type 2100 dimension chart
Dimensions in mm unless a table says inches. Inch sizes are named by the nominal shaft size in inches; d1 gives the same size in mm. Letters match the section drawing. Standard sizes shown; other sizes are built from a drawing or the old seal.
WM2100 · Metric sizes
| Model | d1 (mm) | d3 | d7 | l1 | l2 | l3 | l4 |
|---|---|---|---|---|---|---|---|
| WM2100-10 | 10 | 20 | 21 | 5 | 15.2 | 27.7 | 35.2 |
| WM2100-12 | 12 | 22 | 23 | 6 | 15.2 | 26.7 | 34.2 |
| WM2100-14 | 14 | 24 | 25 | 6 | 15.2 | 29.2 | 34.2 |
| WM2100-15 | 15 | 25 | 26 | 6 | 15.2 | 29.2 | 34.2 |
| WM2100-16 | 16 | 26 | 27 | 6 | 15.2 | 29.2 | 34.2 |
| WM2100-18 | 18 | 32 | 33 | 6 | 20.2 | 31.7 | 39.2 |
| WM2100-20 | 20 | 34 | 35 | 6 | 20.2 | 31.7 | 39.2 |
| WM2100-22 | 22 | 36 | 37 | 6 | 20.2 | 31.7 | 39.2 |
| WM2100-24 | 24 | 38 | 39 | 6 | 20.2 | 34.2 | 44.2 |
| WM2100-25 | 25 | 39 | 40 | 6 | 20.2 | 34.2 | 44.2 |
| WM2100-28 | 28 | 42 | 43 | 6 | 26.2 | 36.7 | 44.2 |
| WM2100-30 | 30 | 44 | 45 | 7 | 26.2 | 35.7 | 43.2 |
| WM2100-32 | 32 | 46 | 48 | 7 | 26.2 | 35.7 | 48.2 |
| WM2100-33 | 33 | 47 | 48 | 7 | 26.2 | 35.7 | 48.2 |
| WM2100-35 | 35 | 49 | 50 | 8 | 26.2 | 34.7 | 47.2 |
| WM2100-38 | 38 | 54 | 56 | 8 | 30.2 | 37.2 | 47.2 |
| WM2100-40 | 40 | 56 | 58 | 8 | 30.2 | 37.2 | 47.2 |
| WM2100-43 | 43 | 59 | 61 | 8 | 30.2 | 37.2 | 52.2 |
| WM2100-45 | 45 | 61 | 63 | 8 | 30.2 | 37.2 | 52.2 |
| WM2100-48 | 48 | 64 | 66 | 10 | 30.2 | 35.2 | 50.2 |
| WM2100-50 | 50 | 66 | 70 | 10 | 30.2 | 37.7 | 50.2 |
| WM2100-53 | 53 | 69 | 73 | 10 | 30.2 | 37.7 | 60.2 |
| WM2100-55 | 55 | 71 | 75 | 10 | 30.2 | 37.7 | 60.2 |
| WM2100-58 | 58 | 78 | 78 | 10 | 33.2 | 42.7 | 60.2 |
| WM2100-60 | 60 | 80 | 80 | 12 | 33.2 | 40.7 | 58.2 |
| WM2100-63 | 63 | 83 | 83 | 12 | 33.2 | 40.7 | 58.2 |
| WM2100-65 | 65 | 85 | 85 | 12 | 33.2 | 40.7 | 68.2 |
| WM2100-68 | 68 | 88 | 90 | 12 | 33.2 | 40.7 | 68.2 |
| WM2100-70 | 70 | 90 | 92 | 12 | 33.2 | 48.2 | 68.2 |
| WM2100-75 | 75 | 99 | 97 | 12 | 40.2 | 48.2 | 68.2 |
| WM2100-80 | 80 | 104 | 105 | 14 | 40.2 | 47.7 | 77.7 |
| WM2100-85 | 85 | 109 | 110 | 14 | 40.2 | 47.7 | 77.7 |
| WM2100-90 | 90 | 114 | 115 | 14 | 40.2 | 52.7 | 77.7 |
| WM2100-95 | 95 | 119 | 120 | 14 | 40.2 | 52.7 | 77.7 |
| WM2100-100 | 100 | 124 | 125 | 14 | 40.2 | 52.7 | 77.7 |
WM2100 · Inch sizes
| Model | d1 (mm) | d3 | d7 | l1 | l2 |
|---|---|---|---|---|---|
| WM2100-3/8" | 9.525 | 20 | 22.225 | 7.9 | 15.2 |
| WM2100-1/2" | 12.7 | 24 | 25.4 | 7.9 | 15.2 |
| WM2100-5/8" | 15.875 | 26 | 31.75 | 10.3 | 15.2 |
| WM2100-3/4" | 19.05 | 32 | 34.93 | 10.3 | 20.2 |
| WM2100-7/8" | 22.225 | 36 | 38.1 | 10.3 | 20.2 |
| WM2100-1" | 25.4 | 39 | 41.28 | 11.1 | 20.2 |
| WM2100-1 1/8" | 28.575 | 42 | 44.45 | 11.1 | 26.2 |
| WM2100-1 1/4" | 31.75 | 46 | 47.63 | 11.1 | 26.2 |
| WM2100-1 3/8" | 34.925 | 49 | 50.8 | 11.1 | 26.2 |
| WM2100-1 1/2" | 38.1 | 54 | 53.98 | 11.1 | 30.2 |
| WM2100-1 5/8" | 41.275 | 56 | 60.33 | 12.7 | 30.2 |
| WM2100-1 3/4" | 44.45 | 61 | 63.5 | 12.7 | 30.2 |
| WM2100-1 7/8" | 47.625 | 64 | 66.68 | 12.7 | 30.2 |
| WM2100-2" | 50.8 | 66 | 69.85 | 12.7 | 30.2 |
| WM2100-2 1/8" | 53.975 | 69 | 76.2 | 14.3 | 30.2 |
| WM2100-2 1/4" | 57.15 | 77 | 79.38 | 14.3 | 33.2 |
| WM2100-2 3/8" | 60.325 | 80 | 82.55 | 14.3 | 33.2 |
| WM2100-2 1/2" | 63.5 | 83 | 85.73 | 14.3 | 33.2 |
| WM2100-2 5/8" | 66.675 | 88 | 85.73 | 15.9 | 33.2 |
| WM2100-2 3/4" | 69.85 | 89 | 88.9 | 15.9 | 33.2 |
| WM2100-2 7/8" | 73.025 | 96 | 95.25 | 15.9 | 33.2 |
| WM2100-3" | 76.2 | 99 | 98.425 | 15.9 | 40.2 |
| WM2100-3 1/8" | 79.375 | 103 | 101.6 | 19.8 | 40.2 |
| WM2100-3 1/4" | 82.55 | 104 | 104.775 | 19.8 | 40.2 |
| WM2100-3 3/8" | 85.725 | 108 | 107.95 | 19.8 | 40.2 |
| WM2100-3 1/2" | 88.9 | 112 | 111.125 | 19.8 | 40.2 |
| WM2100-3 5/8" | 92.075 | 114 | 114.3 | 19.8 | 40.2 |
| WM2100-3 3/4" | 95.25 | 118 | 117.475 | 19.8 | 40.2 |
| WM2100-3 7/8" | 98.425 | 122 | 120.65 | 19.8 | 40.2 |
| WM2100-4" | 101.6 | 124 | 123.83 | 19.8 | 40.2 |
Materials
Materials of construction
- Stationary ring
- Ceramic, SiC, tungsten carbide
- Rotary ring
- Carbon, SiC, tungsten carbide
- Secondary seals
- NBR, EPDM, Viton
- Spring and pressed parts
- Steel
Face pair and elastomer are chosen for the duty; other materials on request.
Cross-reference
John Crane Type 2100
WM 2100 usually corresponds to the John Crane Type 2100. Check the shaft size and the working length against the old seal or its drawing before ordering; if they differ, we build to your dimensions.
Replacing a Type 21 instead? See the Type 21 page: the two are different lengths.
FAQ
FAQs
Is this a genuine John Crane part?
No. It is our own seal built to the Type 2100 style and sold as an equivalent, not as a genuine OEM part.
Can you make a size that is not in the chart?
Yes. The chart lists our standard sizes; other sizes and special faces are built to order. To quote, send the seal part number, a drawing or the old seal.
What do you need for a quote?
The seal part number, a drawing or the old seal, plus the fluid, temperature and pressure if the face pair or elastomer should change.
Request a quote
Send the brand and part number, the seal drawing or a sample of the old seal. As the manufacturer we quote drop-in equivalents, custom and private-label seals at low minimums.