Cold-compressed and freely sintered virgin PTFE flat gasket manufacture · Data Quality Requirements
- Lifecycle status
- Candidate
- Content maturity
- Authored methodology
- Current version
- 0.1.0Last updated
- Readiness
- Review required
Methodology and translation states come from the source record; publishing this website does not change their review status.
Content languages
zh-CN · Aligned
Status, classification and source details
Readiness
- Warnings methodology_not_reviewed Authored methodology is candidate guidance and still requires methodology review.
Classification mapping
CPC 3.0:36990 · narrower
Source
Data Quality Requirements
| requirement_id | Applies to | Requirement | Evidence |
|---|---|---|---|
| dq_identity | all bound and unbound rows | Verify all native names/synonyms/comments, CAS, form, route, geography, compartment, type, every property and exact referenced unit chain. Generic identity proves neither actual supplier compatibility nor quantitative data. Track unresolved auxiliary UUIDs without replacing an atomic exchange or automatic draft. | complete direct identity and supplier/measurement evidence |
| dq_programme | powder through release | Use actual grade/shape-dependent programmes and release testing; source example matrices, density, shrinkage and creep plots are not factory measurements or service certification. | actual programme/lot traces; calibration; drawing and independent specification |
| dq_complete | all ledgers | Retain zero-output, failed, idle, cleanup and rework; all WIP/FG and non-WIP physical/vector histories, raw numerator provenance, ordinary unresolved supplies and missing service/emission coverage. Unknown is not zero or pass. | raw meter and stock records; species evidence; uncertainty and coverage register |
9. Validation Rules
| rule_id | Applies to | Rule | source_ids |
|---|---|---|---|
| v_basis | reference and all rows | Exactly one finished_gasket Product output links the1kg reference. EN/ZH qualifiers, Q gate, rows, unit basis and one normalization agree. Collection stores undivided raw data; aggregation is the target label, not another operation. Q0 yields no unit result. | teadit-ptfe-gaskets-2023 |
| v_material | powder/forming/machining | Reject applying this method to a conflicting powder form, modified/filler/expanded polymer, altered hot-coining/isostatic/ram/skiving route or purchased finished article. Verify actual first release and scope; raw-to-product route must remain complete. | daikin-ptfe-moulding-2019; daikin-ptfe-m17-2016; teadit-ptfe-gaskets-2023 |
| v_native | native UUID bindings | Apply each entire card restriction. The seal generic name cannot infer rubber material from its classification or establish a36990 mapping. TFE monomer CAS116-14-3 cannot represent PTFE9002-84-0 dust; air-unspecified bindings are replaced by verified actual compartments when known. CN below1kV grid user-side supply only. Unresolved actual flow/provider/unit compatibility remains explicit. | daikin-ptfe-moulding-2019; daikin-ptfe-m17-2016; teadit-ptfe-gaskets-2023; doing-ptfe-oven |
| v_balance | manufacturing/FG/non-WIP/packages | Independently verify physical mass/element closure and actual species/reaction-water evidence. Reconcile every package direction/stock and non-WIP charge vector, inherited production/service separation, opening/closing WIP/FG moisture and actual repair new/old components. No duplicated closing-FG output, internal purchase, automatic coproduct or residual-fitted emission. | daikin-ptfe-moulding-2019; daikin-ptfe-m17-2016; jrc-ilcd-2010 |
| v_allocation | shared burden | Document the actual attributional allocation need, dedicated/virtual subdivision, exchange-specific determining causality and only genuinely residual common-gate same-state contemporaneous market values; no fixed physical/economic split or automatic credit. Missing scientific evidence or unsupported relationships remain pending review. | jrc-ilcd-2010 |
| validate_asset_manufacture_conservation | existing capital/reusable manufacture attribution | For every included capital/reusable manufacture attribution verify same-asset continuity, whole installed service in matched units, all historical/current beneficiaries, prior assigned manufacture shares and cumulative share <= 1. Reject a reset by period, cohort, provider, owner or repair. Check distinct real replacement and incremental repair/treatment vectors separately and preserve gross physical mass. A missing denominator, unexplained previous allocation or incomplete beneficiary ledger requires explicit review and an unavailable final attributed amount; structural inspection cannot claim empirical completeness. |
10. Published Dataset Profile
| Field | Value |
|---|---|
| dataset_role | secondary_dataset; background_dataset |
| downstream_use | Declared-unit upstream input to an actually compatible gasket/joint assessment |
| allowed_use | Configuration-compatible attributional manufacturing inventory with disclosed service interval |
| excluded_use | Universal plastic36990 coverage; sealing-service equivalence; oxygen/medical certification; automated mapping or methodology approval |
| required_metadata | All required qualifiers; actual geography/time, material/supplier and full route; single Q; distinct service coverage; source lineage |
| required_quality_disclosure | Uncertainty; actual sampling; failed/zero batches; WIP/FG/non-WIP vectors; native classification caveat; unresolved UUID/provider/compartment and service gaps |
| update_trigger | Material form/grade or route/application change; drawing/specification change; utilities, species or allocation evidence change |
11. Data Sources
| Source id | Type | Reference | Used for |
|---|---|---|---|
| daikin-ptfe-moulding-2019 | handbook | Daikin, POLYFLON PTFE Molding Powder, 10/19 EGE-11b DCEPN; https://www.daikinchem.de/wp-content/uploads/2024/08/Product-Brochure-POLYFLON-PTFE-M.pdf | Conventional powder/compression/free-bake/cooling context pp2–13; adjacent modified grades/other routes pp13–25; application/caution pp26–28. Example figures/programmes are not defaults; warning HCl is not proof of chlorine in pure PTFE. |
| daikin-ptfe-m17-2016 | handbook | Daikin, PTFE M-17 TDS-PTFE-M-007 REV0 2/9/16; https://www.daikinchemicals.com/library/pb_common/pdf/tds_us/Fluoropolymers/PTFE-M/TDS_PTFE_M_007Rev.0_M_17_.pdf | Whole virgin granular fine-cut compression-powder supply, agglomeration/handling and thermal fume context; typical properties not a specification or adopted numbers. |
| teadit-ptfe-gaskets-2023 | literature | Florian Werner, TEADIT, Extreme Differences in PTFE Flat Gaskets, Valve World Americas August2023 pp10–11; https://teadit.com/wp-content/uploads/2023/08/VWAM_August2023_Pgs-10-11_Special-Topic_Florian-Werner_HR.pdf | Compression/sinter/cool/direct-machining sealing endpoint; structured/expanded counterroutes; specific PQR/torque tests not transferred to actual products. |
| doing-ptfe-oven | handbook | Changzhou Doing Machine, PTFE Sintering Oven, retained publisher snapshot2026-10-20; https://www.doing-machine.com/ptfe-sintering-oven | Electric resistance batch-oven/air circulation/exhaust capability and fuel alternatives; nominal model powers are not consumption; machinery plywood packing is not gasket packaging. |
| jrc-ilcd-2010 | official_guidance | European Commission JRC, ILCD Handbook General guide for LCA Detailed guidance, first edition March2010, §§7.9.2–7.9.3 especially printed257–258; https://eplca.jrc.ec.europa.eu/uploads/ILCD-Handbook-General-guide-for-LCA-DETAILED-GUIDANCE-12March2010-ISBN-fin-v1.0-EN.pdf | Allocation-required attributional hierarchy, virtual subdivision and exchange-specific determining physical causality; genuinely residual actual-condition common-gate market value; not an industrial powder recipe. |
| un-cpc3-2025 | official_guidance | UNSD CPC Ver.3.0 Structure30Jun2025, retained original CPC_Ver_3.0_Structure_30Jun2025.csv; https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Structure_30Jun2025.csv | Original36990 and surrounding363/364/369/371 classification labels only; no manufacturing rule or accepted mapping. |
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