K18 Hydraulic piston seals

K18 is a five piece double acting compact seal which consists of elastomeric sealing element, thermoplastic elastomer backup rings and thermoplastic guide rings. It is suitable with many hydraulic cylinders thanks to the design with low friction and superior static and dynamic sealing functionality.

Advantages

Superior sealing performance and low friction with its special design
No additional guide ring requirement at low and medium duty applications thanks to compact design
Economical sealing solution
Simple groove design at one-piece piston
Long service life
Easy installation thanks to cut guide and backup rings

In this catalog

205 K18 parts, bore 11–250 mm across 119 sizes. Most common section heights: 25.4 mm (37), 22.4 mm (20), 20.5 mm (12).

Same bore, other series

If a K18 size is not the right profile, these cover the same ID/OD combinations:

205 parts in catalog

Technical table

Live column filters for code, category, ID, OD and H — same workflow as the store.

205 parts

Code (SKU)	Category	ID (d)	OD (D)	H (L)	Action
K18 020-011	K18	11	20	13.5	View
K18 022-013	K18	13	22	13.5	View
K18 025-015	K18	15	25	16.4	View
K18 025-015/1	K18	15	25	12	View
K18 025-015/2	K18	15	25	12.5	View
K18 025-016	K18	16	25	13.5	View
K18 025-017/1	K18	17	25	13.5	View
K18 025-017/2	K18	17	25	10	View
K18 028-019	K18	19	28	13.5	View
K18 030-017	K18	17	30	15.4	View
K18 030-021	K18	21	30	13.5	View
K18 030-022	K18	22	30	13.5	View
K18 032-019	K18	19	32	15.4	View
K18 032-022	K18	22	32	16.4	View
K18 032-022/1	K18	22	32	15.5	View
K18 032-022/2	K18	22	32	12.5	View
K18 032-024	K18	24	32	15.5	View
K18 032-024/1	K18	24	32	10	View
K18 035-025	K18	25	35	16.4	View
K18 035-027	K18	27	35	15.5	View
K18 038.1-025.4	K18	25.4	38.1	15.87	View
K18 040-024	K18	24	40	18.4	View
K18 040-026	K18	26	40	15.5	View
K18 040-030	K18	30	40	16.4	View
K18 040-030/1	K18	30	40	12.5	View
K18 040-030/2	K18	30	40	12.4	View
K18 040-032	K18	32	40	15.5	View
K18 040-032/1	K18	32	40	10	View
K18 042-028	K18	28	42	15.5	View
K18 044.45-028.57	K18	28.57	44.45	19.05	View
K18 045-029	K18	29	45	18.4	View
K18 045-031	K18	31	45	15.5	View
K18 045-035	K18	35	45	16.4	View
K18 045-037	K18	37	45	15.5	View
K18 050-034	K18	34	50	20.5	View
K18 050-034/1	K18	34	50	18.4	View
K18 050-035	K18	35	50	20	View
K18 050-038	K18	38	50	20.5	View
K18 050-040	K18	40	50	12.5	View
K18 050.8-034.92	K18	34.92	50.8	19.05	View
K18 050.8-041.27	K18	41.27	50.8	11.1	View
K18 055-039	K18	39	55	20.5	View
K18 055-039/1	K18	39	55	18.4	View
K18 055-045	K18	45	55	12.5	View
K18 056-040	K18	40	56	20.5	View
K18 057.15-041.27	K18	41.27	57.15	19.05	View
K18 060-044	K18	44	60	20.5	View
K18 060-044/1	K18	44	60	18.4	View
K18 060-048	K18	48	60	20.5	View
K18 060.32-044.45	K18	44.45	60.32	19.05	View

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