Standard Cylinder Hydraulic Rod Buffer Seals Hby for Excavator

Product Description

HBY
HBY combined with rod seals, to absorb impact and surge pressure under heavy load in order to separate high temperature fluids and improve the service life of the seal element.
The main functions of the buffer seal in the hydraulic system include several aspects. First, it buffers the shock pressure or pressure fluctuations produced by the piston rod of the hydraulic cylinder, easing the backpressure. Second, the seal helps cooling down the temperature, prevents the overheat from transmitting to the seal, and reducing heat generated from the piston rod seal during operation. Third, it reduces the friction resistance caused by the piston rod seal in the hydraulic cylinder. In general, the buffer seal provides adequate lubrication to the piston rod seal or other main seals, and it can enhance the gap extrusion resistance. Thereby, it can extend the durability of the seal element.
Technical information
Max speed 0.5m/ s
Max pressure 21Mpa
Temperature range -45 110
MAT: NY+PU

Code	Fucntion	Limited Condition
		Pressure (MPa)	Speed (m/s)	Temp. (ºC)
SPGO	Piston Seals (Double Acting)	40	5	-45ºC +200ºC
SPG	Piston Seals (Double Acting)	35	1.5	-30ºC +200ºC
SPGW	Piston Seals (Double Acting)	50	1.5	-45ºC +200ºC
GSD	Piston Seals (Single Acting)	40	5	-30ºC +200ºC
DAQ	Piston Seals (Double Acting)	40	2	-30ºC +200ºC
AQ5	Piston Seals (Double Acting)	40	2	-30ºC +200ºC
DAS	Piston Seals (Double Acting)	40	0.5	-30ºC +100ºC
PG	Piston Seals (Double Acting)	35	0.5	-30ºC +100ºC
MPA	Rod Seals (Single Acting)	40	0.5	-45ºC +120ºC
MPB	Rod Seals (Single Acting)	40	0.5	-45ºC +120ºC
MPR	Rod Seals (Single Acting)	40	0.5	-45ºC +120ºC
MPS	Rod Seals (Single Acting)	40	0.5	-45ºC +120ºC
HBY	Rod Seals (Single Acting)	40	0.5	-30ºC +110ºC
HBTS	Rod Seals (Single Acting)	40	3	-30ºC +110ºC
GSJ	Rod Seals (Single Acting)	40	3	-30ºC +110ºC
GSI	Rod Seals (Double Acting)	40	5	-45ºC +200ºC
DH-5	Dust Sels		2	-40ºC +110ºC
DHS	Dust Sels		2	-40ºC +110ºC
GSZ5	Dust Sels		5	-40ºC +110ºC
DKBI	Dust Sels		3	-30ºC +100ºC
DKBZ	Dust Sels		3	-30ºC +100ºC
RVA	Rod Var i Seals	45	15	-70ºC +260ºC
GRS	Rotary Rod Seals	30	1	-30ºC +200ºC
ROI	Rotary Rod Seals	28	0.3	-30ºC +100ºC
BRT	Rod Seal Backup rings		1	-45ºC +200ºC
N4W	Piston Backup rings		1	-45ºC +120ºC
KZT	Dust Rings		5	-45ºC +200ºC
WR	Wear Rings		1	-45ºC +120ºC
RYT	Guide Tape		5	-45ºC +200ºC

Sealing Component Storage Guidelines and Recommend-ed Shelf Life
Storage Recommendations:
Stock Control	Follow the First- In-First-Out (FIFO) princip le
Optimal Temp.	Seals should be kept aw ay from heat sources like direct sunlight and heat-emitting objects . The maximum storage temperature is +32°C. Low temperatures w on't cause permanent damage to the seals but can make them brittle, leading to potential breakage if mishandled. Generally , the storage temperature for seals should not go below +10°C, and they should be brought to room temperature before installation.
Avoid strong light	Surfaces should be shielded from direct sunlight and artificial light sources to prevent exposure to ultraviolet radiation.
Moisture control	Special care should be taken during storage, and the ambient humidity should not exceed 65% . Some specific polyurethane seals that are sensitive to moisture should be stored in sealed containers
Keep away from oxygen and ozone	Ozone and oxygen are harmful to seals . Seals should be stored in sealed containers . Any equipment that generates sparks should be kept aw ay from the storage containers .
Keep away from	For seals to have a longer storage life, they should be kept aw ay from contaminants . The w arehouse should be kept clean.
Avoid distortion	Large seals should be stored flat instead of hanging, as prolonged hanging can cause distortion. Seals should not be placed on hooks , nails , or metal plates .

Recommended Shelf Life :
Compounds	Shelf Life
FEPM	7 Years
EP,EPR,EPDM	7 Years
FKM	7 Years
NBR,HNBR,XNBR	7 Years
AU or EU	10 Years
TPCE	10 Years
PTFE	Unlimited