K40 Hydraulic piston seals

K40 single acting piston seal consists of thermoplastic polyurethane ring, wihch avoids hydrodynamic pressure thanks to the notched design and thermoplastic POM backup ring.

Advantages

Good dynamic and static sealing
Relief grooves against dynamic pressure
Long service life
High extrusion resistance
Thin oil film and very good locking feature

Area of Application

Heavy duty cylinders
Mobile machinery
Scrap and metal industry
Long stroke cylinders

In this catalog

38 K40 parts, bore 8–210 mm across 22 sizes. Most common section heights: 13 mm (8), 11 mm (6), 9.5 mm (5).

Same bore, other series

If a K40 size is not the right profile, these cover the same ID/OD combinations:

38 parts in catalog

Technical table

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

38 parts

Code (SKU)	Category	ID (d)	OD (D)	H (L)	Action
K40-014	K40	8	14	6	View
K40-036	K40	27	36	6	View
K40-040	K40	25	40	11	View
K40-045	K40	30	45	11	View
K40-045/1	K40	30	45	9.5	View
K40-050	K40	35	50	11	View
K40-050/1	K40	35	50	9.5	View
K40-050/2	K40	30	50	12	View
K40-055	K40	40	55	11	View
K40-055/1	K40	40	55	9.5	View
K40-060	K40	45	60	11	View
K40-060/1	K40	45	60	9.5	View
K40-063	K40	48	63	10	View
K40-063/1	K40	50	63	10	View
K40-063/2	K40	48	63	9.5	View
K40-063/3	K40	50.8	63.5	10.5	View
K40-065	K40	50	65	11	View
K40-065/1	K40	45	65	13	View
K40-070	K40	50	70	13	View
K40-070/2	K40	55	70	10	View
K40-070/3	K40	50	70	16.5	View
K40-075	K40	55	75	13	View
K40-080	K40	60	80	13	View
K40-080/1	K40	60	80	12.5	View
K40-085	K40	70	85	9.3	View
K40-090	K40	70	90	13	View
K40-100	K40	80	100	13	View
K40-100/1	K40	88	100	8.5	View
K40-110	K40	90	110	13	View
K40-120	K40	100	120	13	View
K40-125	K40	100	125	16.2	View
K40-140	K40	115	140	15	View
K40-140/1	K40	120	140	12.5	View
K40-150	K40	120	150	19	View
K40-170	K40	150	170	12.5	View
K40-180	K40	150	180	19	View
K40-220	K40	190	220	17	View
K40-240	K40	210	240	17	View