Seal Oil

Enhance your heavy equipment’s performance with Case Construction Seal Oil #3685. This high-quality seal oil ensures optimal lubrication and protection for hydraulic systems, extending the life of your machinery and improving efficiency on the job site.

Compatible equipment

This part fits DAVIS TASKFORCE SUPER TRENCHER, WHEEL LOADER STD LINKAGE - STAGE V - 2025 UPDATES, DRIVE - WHEEL LOADER STD LINKAGE - STAGE V - 2025 UPDATES, WHEEL LOADER - STAGE V - TS - ZBAR, WHEEL LOADER - T4B - STD LINKAGE, WHEEL LOADER - T4B - XR LINKAGE, CASE CRAWLER EXCAVATOR, CASE CRUZ-AIR WHEELED EXCAVATOR, CASE CRAWLER EXCAVATOR - DUAL POWER ELECTRIC & DIESEL ENGINE, CASE LONG TRACK/TURNABLE LEVELER CRAWLER EXCAVATOR, STD LINKAGE WHEEL LOADER STAGE 5, CASE CRAWLER TRACTOR, CRAWLER DOZER, POCLAIN CRAWLER EXCAVATOR, CASE LOGGER CRAWLER EXCAVATOR, CASE FELLER/BUNCHER CRAWLER EXCAVATOR, CASE TRIMLINE TRENCHER, DROTT CRAWLER EXCAVATOR, COMPACT WHEEL LOADER TIER 3, COMPACT WHEEL LOADER STD EVO, ZB, COMPACT WHEEL LOADER STD, TC, COMPACT WHEEL LOADER STD, ZB, SERIES - CASE UNI-LOADER SKID STEER LOADER, CASE HORIZONTAL DIRECTIONAL DRILLING MACHINE, CASE UNI-LOADER SKID STEER LOADER, CASE UNI-LOADER SKID STEER LOADER W/DEUTZ ENGINE, CRAWLER DOZER TIER 2, SERIES 3 CRAWLER TIER 3, CASE GASOLINE ENGINE, WINCH, UTILITY BACKHOE, SMALL WHEEL LOADER, DROTT LOGGER & HEAVY DUTY CRAWLER EXCAVATOR, COMPACT WHEEL LOADER HS, ZB, COMPACT WHEEL LOADER HSP, ZB - TIER 4 - MY23, COMPACT WHEEL LOADER HSP, ZB, LOADER AND BACKHOE, BACKHOE, LOADER, DAVIS FLEETHOE TRENCHER, CASE TERRATRAC CRAWLER TRACTOR, CASE/BELOIT SKID KING WHEEL LOADER, CASE SKID KING WHEEL LOADER, CASE FORKLIFT, BACKHOE AND LOADER FOR 530CK TRACTORS, BACKHOE FOR W7, W9A, W9B, W10, CASE WHEEL TRACTOR, COMPACT WHEEL LOADER HPS EVO, XR, COMPACT WHEEL LOADER HSP EVO, ZB, COMPACT WHEEL LOADER STD, XR - TIER 4 - MY23, COMPACT WHEEL LOADER STD, XR, BACKHOE AND LOADER, BACKHOE FOR 310G AND 450 CRAWLER, BACKHOE FOR 580CK, BACKHOE FOR W SERIES RIGID LOADERS, ARTICULATED TRUCK, DROTT ENGINES FOR 35 CRAWLER - B SERIES, CASE ENGINE, BACKHOE FOR CRAWLER MODELS 750, 850, 1150, BACKHOE FOR 680CK TRACTOR, BACKHOES FOR CRAWLER MODELS 750, 850, 1150, ARTICULATED TRUCK S/N: UNTIL HHD000754, SERIES A INTERNATIONAL LOADER TRACTOR, BACKHOE FOR 450, 450B, 850, 850B, AND W14, CASE LOADER BACKHOE ATTACHMENTS, LOADER AND BACKHOE FOR 580CK SERIES B, DROTT SERIES-B CRAWLER EXCAVATOR, CASE TRENCHER, CASE G.P. & L.C.G. WHEEL TRACTOR, CASE LOADER/LANDSCAPER TRACTOR, DROTT SERIES-B FELLER/BUNCHER CRAWLER EXCAVATOR, DROTT SERIES-A CRAWLER EXCAVATOR, CASE SKID STEER LOADER, SKID STEER - 410 NA BSN N7M480924, 410 EU BSN N7M468736, SKID STEER - SERIES 3, 410 NA ASN N7M480924, 410 EU ASN N7M468736, INTERNATIONAL HARVESTER COMPACT LOADER, SKID STEER - 420NA BSN N7M466710, 420EU BSN N8M466713, SKID STEER - TIER 3, 420NA N7M466710, 420EU ASN N8M466713, CASE WHEEL TRACTOR W/LOADER BACKHOE, COMPACT TRACK LOADER - BSN N7M455401, COMPACT TRACK LOADER - SERIES 3, ASN N7M455401, COMPACT WHEEL LOADER HS, ZB - STAGE V, SKID STEER - SERIES 3, ASN 430 NA N7M479683, 430 EU N7M479546, SKID STEER BSN 430 NA N7M479683, 430 EU N7M479546, CASE CONSTRUCTION KING WHEEL TRACTOR, SKID STEER - BSN N7M425032, SKID STEER - TIER 3 , ASN N7M425032, SKID STEER - 440 NA BSN N8M474469, 440 EU BSN N8M407542, SKID STEER - SERIES 3, 440 NA ASN N8M474469, 440 EU ASN N8M407542, COMPACT TRACK LOADER - BSN N7M483467, COMPACT TRACK LOADER - SERIES 3, ASN N7M483467, SKID STEER - BSN N7M454787, SKID STEER - TIER 3 , ASN N7M454787, COMPACT TRACK LOADER - BSN N8M458846, COMPACT TRACK LOADER - TIER 3 , ASN N8M458846, SKID STEER, TIER 2, P.I.N. N7M458414 & PRIOR, SKID STEER, TIER 3, P.I.N. N7M464019 & AFTER, CASE LONG TRACK CRAWLER TRACTOR, COMPACT TRACK LOADER - BSN N7M464019, COMPACT TRACK LOADER - SERIES 3 ASN N7M464019, SKID STEER - TIER 3 ASN N7M452623, SKID STEER BSN N7M452623, CASE CONSTRUCTION KING LOADER BACKHOE, CASE LOAD KING WHEEL LOADER, WHEEL LOADER XT LINKAGE - STAGE V - 2025 UPDATES, WHEEL LOADER - STAGE V - TS - XT, WHEEL LOADER - T4B - XT LINKAGE, CASE CONSTRUCTION KING FORKLIFT, IND - CASE CRAWLER TRACTOR, LOADER LANDSCAPER, SERIES-2 LOADER LANDSCAPER - ASN JJG0225755, SERIES 3 LOADER LANDSCAPER TIER 3 - ASN N8C510600, LOADER LANDSCAPER - LIVERY, LOADER LANDSCAPER - TIER 4B - MY26, LOADER LANDSCAPER - TIER 4A ASN NCC570600, TRACTOR LOADER BACKHOE, BACKHOE LOADER, BACKHOE LOADER TIER 4- MR1UP, CASE CONSTRUCTION KING TRACTOR W/SHUTTLE TRANSMISSION, CASE CONSTRUCTION KING WHEEL TRACTOR W/HYDROSTATIC TRANSMISSION, ELECTRIC FOUR WHEEL DRIVE, CASE CONSTRUCTION KING LOADER BACKHOE - SUPPLEMENT, CASE CONSTRUCTION KING LOADER BACKHOE - 4WD SUPPLEMENT, CASE CONSTRUCTION KING LOADER BACKHOE - TURBO SUPPLEMENT, SERIES 2 LOADER BACKHOE - ASN JJG0239360, BACKHOE LOADER - TIER 3 NRC, BACKHOE LOADER - TIER 4A - FROM PIN NCC560000, BACKHOE LOADER, 2WD - TIER 3 NRC - MY18, BACKHOE LOADER, 2WD - TIER 3 NRC - MY19, BACKHOE LOADER, 2WD - TIER 4B - MY18, BACKHOE LOADER, 2WD - TIER 4B - MY19, BACKHOE LOADER, 4WD - TIER 3 NRC - MY18, BACKHOE LOADER, 4WD - TIER 3 NRC - MY19, BACKHOE LOADER, 4WD - TIER 4B - MY18, BACKHOE LOADER, 4WD - TIER 4B - MY19, LOADER BACKHOE - TIER 3 NRC, CASE BACKHOE, CASE SUPER-D CONSTRUCTION KING LOADER BACKHOE, CASE SUPER-E CONSTRUCTION KING LOADER BACKHOE, CASE SUPER-K CONSTRUCTION KING LOADER BACKHOE, LOADER BACKHOE - BSN JJG0239361, BACKHOE LOADER - TIER 4A - FROM PIN NCC564000, LOADER BACKHOE, BACKHOE LOADER - WIDE TRACK, BACKHOE LOADER, 4WD - WIDE TRACK - TIER 3 NRC - MY18, BACKHOE LOADER, 4WD - WIDE TRACK - TIER 3 NRC - MY19, BACKHOE LOADER, 4WD - WIDE TRACK - TIER 4B - MY18, BACKHOE LOADER, 4WD - WIDE TRACK - TIER 4B - MY19, BACKHOE LOADER, WIDE TRACK, BACKHOE LOADER, WIDE TRACK - TIER 3 NRC, BACKHOE LOADER, CENTER PIVOT, TOOL CARRIER, 4WD - TIER 4B - MY22, BACKHOE LOADER, CENTER PIVOT, TOOL CARRIER, 4WD - TIER 4B - MY24, BACKHOE LOADER, CENTER PIVOT, TOOL CARRIER, 4WD - TIER 4B - MY25, BACKHOE LOADER, CENTER PIVOT, TOOL CARRIER, 4WD, WEST VIRGINIA - TIER 4B - MY24, BACKHOE LOADER, SIDE SHIFT, STRAIGHT LOADER ARM, 4WD - TIER 3 - MY21, BACKHOE LOADER, SIDE SHIFT, TOOL CARRIER, 4WD - TIER 4B - MY22, BACKHOE LOADER, SIDE SHIFT, TOOL CARRIER, 4WD - TIER 4B - MY25, CASE CONSTRUCTION KING FORKLIFT TRACTOR, FORKLIFT - LIVERY, FORKLIFT, TURBO LOADER BACKHOE, SERIES 2 LOADER BACKHOE - ASN JJG0210575, CASE TERRATRAC GASOLINE CRAWLER TRACTOR, CASE TURBO HORIZONTAL DIRECTIONAL DRILLING MACHINE, CASE WHEEL LOADER, SERIES 1 CRAWLER - 07/01/2002 - 01/31/2005, SERIES 2 CRAWLER TIER 2 - 01/21/2005 - 06/16/2006, SERIES 3 CRAWLER TIER 2 - 06/20/2006 - 12/31/2008, CASE SERIES-2 TELESCOPIC HANDLER, CASE TELESCOPIC HANDLER, CASE EXCAVATOR - HYDRAULIC SHEARS, CASE TIER-2 TELESCOPIC HANDLER, DAVIS TRIMLINE TRENCHER, DAVIS TASK FORCE TRENCHER, CASE WHEEL LOADER TIER 3, WHEEL LOADER TIER3 ZBAR EC4 - BR, WHEEL LOADER TIER3 ZBAR EC4 FERTILIZER - BR, WHEEL LOADER TIER3 ZBAR EC4 SUGARCANE BAGASSE - BR, CRAWLER DOZER TIER 3, DOUBLE DRUM, POCLAIN WHEELED EXCAVATOR, WHEEL LOADER TIER 3 NA/EU, 4WD MOTOR GRADER ELECTRO-HYDRAULIC - STAGE V, 4WD MOTOR GRADER MY20 - STAGE V, 6WD MOTOR GRADER ELECTRO-HYDRAULIC - STAGE V, AWD MOTOR GRADER MY20 - STAGE V, MOTOR GRADER - ASN 020001, MOTOR GRADER TIER 2- BTW 020101-020187, Tier-4, CASE TURBO TRENCHER, MOTOR GRADER - ASN 022001, MOTOR GRADER TIER 2 - ASN 022101, MOTOR GRADER - ASN N5AF04007, MOTOR GRADER - ASN 024001, MOTOR GRADER TIER 2 - BTW 024102-024129, CASE TURNTABLE LEVELER CRAWLER EXCAVATOR, CASE EXCAVATOR - TILTING TOOL ATTACHMENT W/QUICK COUPLER, EXCAVATOR - TIMBER KING SUPPLEMENT, 4LE2XASS01 - ISUZU DIESEL ENGINE, 6UZ1XASS01 - ISUZU DIESEL ENGINE, BENTONITE INJECTOR SYSTEM - 1997, BENTONITE INJECTOR SYSTEM - 2000, BENTONITE INJECTOR SYSTEM / 1997, BENTONITE INJECTOR SYSTEM / 2000, BENTONITE INJECTOR SYSTEM, CRUSHER, HYDRA-BORER, MAXI-SNEAKER CABLE LAYER, SERIES-B MAXI-SNEAKER CABLE LAYER, SERIES-B MINI-SNEAKER CABLE LAYER, COMPACT WHEEL LOADER STD, ELECTRIC, ZB, MIDI CRAWLER EXCAVATOR, 2 PIECE BOOM, CAB - STAGE V, CRAWLER EXCAVATOR TIER 3, MINI CRAWLER EXCAVATOR - BTW PW11-30001 - PW12-40000, MINI CRAWLER EXCAVATOR, CANOPY, MINI CRAWLER EXCAVATOR, CANOPY, MY20 - STAGE V, MINI CRAWLER EXCAVATOR, CAB - STAGE V, MINI CRAWLER EXCAVATOR, CANOPY - STAGE V, CRAWLER EXCAVATOR - LONG CARRIAGE - STAGE V, MINI CRAWLER EXCAVATOR MY20 - STAGE V, MINI CRAWLER EXCAVATOR, CAB - TR4F, MINI CRAWLER EXCAVATOR, CANOPY - TR4F, MINI CRAWLER EXCAVATOR ASN N4TN31001 -, MINI CRAWLER EXCAVATOR, 2 PIECE BOOM, CANOPY - STAGE V, MINI CRAWLER EXCAVATOR, 2 PIECE BOOM,CAB - STAGE V, MINI CRAWLER EXCAVATOR, ELECTRIC, CAB, MINI CRAWLER EXCAVATOR, ELECTRIC, CANOPY, MINI CRAWLER EXCAVATOR, CAB, PW12 - MINI CRAWLER EXCAVATOR - BTW PW11-30001 - PW12-40000, MINI CRAWLER EXCAVATOR, CAB, JAPAN ENGINE - STAGE V - MY25, MINI CRAWLER EXCAVATOR, CANOPY, JAPAN ENGINE - STAGE V - MY25, MINI CRAWLER EXCAVATOR, MINI CRAWLER EXCAVATOR, 2 PIECE BOOM, CAB - STAGE V, EXCAVATOR, MINI CRAWLER EXCAVATOR, CAB - STAGE V MY24, MINI CRAWLER EXCAVATOR, CANOPY - STAGE V MY26, MINI CRAWLER EXCAVATOR, 2 PIECE BOOM, CAB - STAGE V MY24, MIDI CRAWLER EXCAVATOR, CAB - STAGE V, CRAWLER EXCAVATOR, CRAWLER EXCAVATOR TIER 3 - ASN DAC075K3N8SLA7101, 70 - BACKHOE, FLEETLINE 16+4 TRENCHER, FLEETLINE 25+4 TRENCHER, CASE TRENCHER W/1.8L DIESEL ENGINE, CASE TRENCHER W/2.1L ENGINE, TRENCHER - MITSUBISHI ENGINE, TRENCHER - STEERING WHEEL SUPPLEMENT, TRENCHER - CASE 188 DIESEL ENGINE, MINOTAUR COMPACT DOZER LOADER, VIBRATORY ROLLER, COMBINATION ROLLER T4F, COMBINATION ROLLER, DOUBLE DRUM ROLLER T4F, ENGINE - 504160465 - 84448830, ENGINE - 504160467 - 84455196, ENGINE 504334612 - 87486945, ENGINE 504334624 - 87486953, ENGINE - 504383665 - 84225346, ENGINE 504387298 - 84247650, ENGINE 5801464758 - 84299638, ENGINE - 504160466 - 84457640, ENGINE 504334607 - 87486941, ENGINE - 504160468 - 84457641, ENGINE 504334626 - 87486951, ENGINE - 504383664 - 84225347, ENGINE 504296314 - 87735214, ENGINE 504317579 - 87583250, ENGINE 5801464757 - 84405027, ENGINE 5801672127 - 84523801, ENGINE - 5801464759 - 84299565, ENGINE 5801763470 - 47568087 TITAN 3540 / 4540 - TIER4B, ENGINE 5801763473 - 47568088 TITAN 3040 / 4040 - TIER4B, ENGINE 504388763 - 84308023, ENGINE 504218693 - 87584965, ENGINE 504243740 - 84473214, ENGINE PN 5802263606 - 72KW, ENGINE PN 5802766972 - 72KW, ENGINE 504165557 - 87329242, ENGINE PN 5801550765 - 82KW, ENGINE PN 5801550774 - 82KW, ENGINE PN 5801550775 - 82KW, ENGINE PN 5802263609 - 82KW, ENGINE PN 5802277564 - 82KW, ENGINE PN 5802766978 - 82KW, ENGINE PN 5802766992 - 82KW, ENGINE 5801927912 - 47795065, ENGINE 5802031505 - 47922428, ENGINE 5802031507 - 47922427, ENGINE 5801454213 - 84375940, ENGINE 5801451663 - 84371229, ENGINE 5801451664 - 84371230, ENGINE 5801688472 - 47397958, ENGINE PN 5801836266 - 96KW, ENGINE PN 5802100830 - 96KW, ENGINE PN 5802264525 - 96KW, ENGINE 5801688466 - 84573058, ENGINE PN 5801836156 - 81KW, ENGINE PN 5802100818 - 81KW, ENGINE PN 5802264524 - 81KW, ENGINE 504388926 - YM02P00013P1, ENGINE 5801564906 - YB02P00021P1, ENGINE 504375996 - 84371227, ENGINE 5801404986 - 84371228, ENGINE PN 5802078395 - 105KW, ENGINE PN 5802192166 - 105KW, ENGINE - 5801655811 - 47426272, ENGINE PN 5802036512 - 90KW, ENGINE PN 5802094292 - 90KW, ENGINE - 5802106398 - 47937034, ENGINE 5803106211 - 92155542 - T4A ABT NEF4 90KW, ENGINE 504386130-LQ02P00019P1, ENGINE 5801366313 - LB02P00016P1, ENGINE - 504386129-LQ02P00070P1, ENGINE 5801366310 - LQ02P00062P1, ENGINE 504375985 - YN02P00080P1, ENGINE - 504386128 - YN02P00090P1, ENGINE 504384900 - 84232924, ENGINE 5801366317 - 87746887, ENGINE 5801366315 - 84169137, ENGINE 5801366316 - 84169140, ENGINE 5801366314 - 84169139, ENGINE PN 5802713444 - 105KW, ENGINE 5801398328 - 84281129., CASE TRENCHER W/LOADER BACKHOE, ISM ENGINE, DAVIS FLEETLINE 70+4 TRENCHER, SNEAKER - SERIES-C TRENCHER, SNEAKER C - 25+4XP TRENCHER, DAVIS MINI-SNEAKER CABLE LAYER, ENGINE, 60 - DAVIS LINE LAYER ATTACHMENT, IRRIGATION POWER UNIT, DAVIS FLEETLINE 30+4 SUPER TRENCHER, DAVIS FLEETLINE 40+4 SUPER TRENCHER, DAVIS FLEETLINE 30+4 TRENCHER, PNEUMATIC TIRE ROLLER TIER 3, PNEUMATIC TIRE ROLLER TIER 4B, TIRE COMPACTOR - STAGE V - MY24, DAVIS FLEETLINE 40+4 TRENCHER, SMALL ARTICULATED LOADER, SKID STEER LOADER, SKID STEER LOADER - NRC, SKID STEER LOADER - TIER 3 - ROW, SKID STEER LOADER - TIER 4F - NA, SKID STEER ENGINE - 844T, SKID STEER LOADER - S5 NA, REGULATED NA - TIER 4 - MY26, SINGLE DRUM COMPACTOR, VIBRATORY ROLLER TIER 3, SKID STEER LOADER TIER 4, REGULATED NA, TIER 4 - MY26, SV340B-RGV-AP, MINI TRACK LOADER 1000 - STAGE V, ELECTRIC MINI TRACK LOADER, COMPACT TRACK LOADER, COMPACT TRACK LOADER - NRC, COMPACT TRACK LOADER - TIER 3 - ROW, COMPACT TRACK LOADER - TIER 4F - NA, TELEHANDLER, CASE UNIT LOADER, CASE WHEEL LOADER W/POD CAB - NEW YORK STATE SPECIAL, CASE ARTICULATED WHEEL LOADER including models 1000, 1021G, 1021G X, 1021G2, 1080, 1080B, 1085B, 1085C, 1086B, 1088, 1121G, 1121G X, 1121G2, 1150B, 1150D, 1150E, 1150G, 1150H, 1150M LT, 1150M WT, 1150M WT/LGP, 1155D, 1155E, 115CL, 1187.

Frequently asked questions

What is the part number?

The manufacturer part number is 3685.

Is this a genuine OEM part?

Yes. Southeastern Equipment stocks OEM and quality aftermarket parts for heavy equipment. Contact us if you need a specific OEM source or aftermarket option.

Will this fit my machine?

See the compatible equipment list above. If your model is not listed, call us with your machine's serial number and we can confirm.

Where does this ship from?

Southeastern Equipment Company ships parts nationwide from our US warehouse. Orders placed before 2 PM ET typically ship same day.

Free pickup at any of our 17 branches across Ohio, Indiana, Michigan, and Kentucky. Select your preferred branch at checkout.

30-day no-fault returns. Bought the wrong part? Send it back for a full refund — no restocking fees, no minimums.