DBH 1237Sil radial shaft seal — 37 x 72 x 12/14.5

DBH 1237Sil belongs to radial shaft seal, part of our Seals range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 1237Sil and any equivalents.

The DBH 1237Sil is a radial shaft seal with an A 114 design, meaning it carries a primary sealing lip plus a secondary dust lip. It keeps oil or grease inside gearboxes, pumps and motors while keeping dirt out. Shaft 37 mm, housing 72 mm, height 12.0/14.5 mm — a size that shows up often in power transmission equipment.

Reading the reference helps when you are cross-checking a worn part. The 1237Sil code belongs to the DBH line, and the numbers map to the bore it fits: shaft (d) 37 mm, housing (D) 72 mm, height (h) 12.0/14.5 mm. That split height is not a typo — it reflects a stepped outer profile, which gives the seal a firmer seat in the housing and shields the lip area. The A 114 designation tells you there are two lips at work: one retains lubricant, the other blocks particles.

Typical service is on rotating shafts supported by bearings or bushings: reducers, gearboxes, centrifugal pumps, electric motors and similar transmission components. Plants in food processing, chemical and general process work use this style where lubricant retention and cleanliness both matter. You will also find it on agricultural equipment and material handling machinery running in dust or damp conditions.

Installation decides how long the seal lasts. Check the shaft for hardness and surface finish, and remove burrs or score marks that could cut the lip. Coat the lip with the same oil or grease the equipment uses, then drive the seal in with a tube that contacts the outer diameter only — never the lip. The housing bore should be clean, free of dents, with the entry chamfer intact. If the seal sees pressure, verify the design and lip material suit that service first.

Need a replacement or a cross-reference? Send the part number 1237Sil, or simply your shaft, housing and height measurements. We can search the same series or other brands we carry, provided the space and the application allow it, and we can advise on lip compound and spring choice based on your operating temperature and fluid.